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Dr. Ammar Nayfeh

Dr. Ammar Nayfeh

Email : –  ammar.nayfeh@ku.ac.ae

Dr Ammar Nayfeh is currently an associate professor in the  Department of Electrical Engineering and Computer Science (EECS) and director of the Nano Electronics and Photonics group (NEP) at Khalifa University of Science and Technology. Prior to joining Khalifa University, Dr. Nayfeh was with Advanced Micro Devices (AMD) as a researcher working on Ultra Thin Body (UTB) SOI Devices for 22nm and beyond in a joint project with IBM. Most recently, Dr. Nayfeh was employed at Innovative Silicon (ISi), a Silicon Valley startup that licenses Z-RAM Technology, a DRAM replacement. In addition, he was a part-time professor at San Jose State University. Professor Ammar Nayfeh has authored or co-authored over 45 publications, and holds two patents. He is a member of IEEE and Stanford Alumni Association.  He has received the Material Research Society Graduate Student Award, the Robert C. Maclinche Scholarship at UIUC, and Stanford Graduate Fellowship.

Additional information on Professor Ammar Nayfeh’s research can be found at http://www.nep-masdar.com

He received his Bachelor’s degree in Electrical Engineering from the University of Illinois Urban Champaign (2001) and his Master’s degree in 2003 from Stanford University.

He earned a PhD in Electrical Engineering (EE) from Stanford University in 2006. His research focused on heteroepitaxy of Germanium on Silicon.

  • Integrated Microelectronic Devices
  • Physics of Microfabrication: Front End Processing
  • Micro/Nano Processing Technology
  • Thin Film PV, Tandem Cells and Nanotechology enhanced solar cells
  • Nano Memory
  • Nano Materials and Structures

Journal Publications

  • Aaesha Alnuaimi,Ibraheem Almansouri, Irfan Saadat and Ammar Nayfeh. ” High Performance Graphene-Silicon Schottky Junction Solar Cells with HfO2 Interfacial Layer Grown by Atomic Layer Deposition.” Solar Energy Volume 164, April 2018, Pages 174-179
  • Aaesha Alnuaimi,Ibraheem Almansouri, Irfan Saadat and Ammar Nayfeh. “Interface Engineering of Graphene-Silicon Schottky Junction Solar Cells with Al2O3 Interfacial Layer Grown by Atomic Layer Deposition” RSC Advances, 2018, 8, 10593 – 10597
  • Abdul Hadi,E. A. Fitzgerald, S. Griffiths, and A. Nayfeh, “III-V/Si dual junction solar cell at scale: manufacturing cost estimates for step-cell based technology”, Journal of Renewable and Sustainable Energy 10, 015905 (2018)
  • Abdul Hadi, Ghada Dushaqand Ammar Nayfeh. “Effect of atomic layer deposited Al2O3:ZnO alloys on thin-film silicon photovoltaic devices” Journal of Applied Physics 122, 245103 (2017)
  • Ghada H. Dushaq,Mahmoud S. Rasras, Ammar M. Nayfeh, ” Metal-germanium-metal photodetector grown on silicon using low temperature RF-PECVD,” Optics Express Vol. 25, Issue 25, pp. 32110-32119 (2017)
  • Ghada H. Dushaq,Mahmoud S. Rasras, Ammar M. Nayfeh, ” Passivation of Ge/high-κ interface using RF Plasma nitridation” Semiconductor Science and Technology, Volume 33, Number 1 2017
  • Nazek El-Atab,Turkan Gamze Ulusoy, Amir Ghobadi, Junkyo Suh, Raisul Islam, Ali K. Okyay, Krishna Saraswat, and Ammar Nayfeh “”Cubic-Phase Zirconia Nano-islands Growth Using Atomic Layer Deposition and Application in Low-Power Charge-Trapping Nonvolatile-Memory Devices” Nanotechnology 28, 445201, 2017
  • Nazek El-Atab, Irfan Sadaat, Krishna Saraswat, and Ammar Nayfeh “Cubic-Phase Zirconia Nano-islands Growth Using Atomic Layer Deposition and Application in Low-Power Charge-Trapping Nonvolatile-Memory Devices” IEEE Transactions on Nanotechnology ( Volume: 16, Issue: 6, Nov. 2017 )
  • Ghada H. Dushaq, Mahmoud S. Rasras, Ammar M. Nayfeh, “Low temperature deposition of germanium on silicon using Radio Frequency Plasma Enhanced Chemical Vapor Deposition,” Thin Solid Films, page 585-592, 2017
  • Ghada H. Dushaq, Mahmoud S. Rasras, Ammar M. Nayfeh, “Tuning the optical properties of RF-PECVD grown μc-Si: H thin films using different hydrogen flow rate,” Superlattices and Microstructures vol 107 page 172-177  2017
  • Ghada H. Dushaq, Mahmoud S. Rasras, Ammar M. Nayfeh, “Germanium MOS capacitors grown on Silicon using low temperature RF-PECVD,” J Phys. D: Appl. Phys. 50 405107
  • Nazek El-Atab, Farsad Chowdhury,Turkan Gamze Ulusoy, Amir Ghobadi, Amin Nazirzadeh, Ali K. Okyay, and Ammar Nayfeh “~3-nm ZnO Nanoislands Deposition and Application in Charge Trapping Memory Grown by Single ALD Step,” Nature Scientific Reports 6, Article number: 38712 (2016)
    doi:10.1038/srep38712
  • Ghada H. Dushaq, Mahmoud S. Rasras, Ammar M. Nayfeh, “Distribution and coverage of 40 nm gold nano-particles on aluminum and hafnium oxide using electrophoretic method and fabricated MOS structures,”  Materials Research Bulletin, Vol. 86 Pages 302-307 February 2017
  • Nazek El-Atab, Farsad Chowdhury, Turkan Gamze Ulusoy, Amir Ghobadi, Amin Nazirzadeh, Ali K. Okyay, and Ammar Nayfeh “~3-nm ZnO Nanoislands Deposition and Application in Charge Trapping Memory Grown by Single ALD Step,” Nature Scientific Reports 6, Article number: 38712 (2016)
  • Aaesha Alnuaimi, Ibraheem Almansouri, and Ammar Nayfeh. “Performance of planar heterojunction perovskite solar cells under light concentration.” AIP Advances, vol. 6, no. 11, p. 115012, 2016
  • Aaesha Alnuaimi, Ibraheem Almansouri, and Ammar Nayfeh. “Effect of mobility and band structure of hole transport layer in planar heterojunction perovskite solar cells using 2D TCAD simulation.” Journal of Computational Electronics 15, no. 3 pp. 1110-1118,2016.
  • Nazek El-Ataband Ammar Nayfeh “1D vs. 3D quantum confinement in 1-5 nm ZnO nanoparticles agglomerations for application in charge trapping memory devices,”Nanotechnology vol.27,p.  2752052016
  • Farsad Imtiaz Chowdhury, Aaesha Alnuaimi, Sabri Alkis, Bülend Ortaç, Selcuk Aktürk, Mustafa Alevli, Nikolaus Dietz, Ali Kemal Okyay, and Ammar Nayfeh, “Enhancement in c-Si solar cells using 16nm InN nanoparticles” Material Research Express, Vol. 3, No. 5, PP. 056202, 2016
  • Farsad Imtiaz Chowdhury, Aaesha Alnuaimi, Nazek El-Atab, Munir Nayfeh, and Ammar Nayfeh, “Enhanced performance of thin-film amorphous silicon solar cells with a top film of 2.85 nm silicon nanoparticles,” Solar Energy, Vol. 125, PP. 332-338, 2016
  • Vikas Kumar, Ammar Nayfeh “TCAD simulation and modeling of impact ionization (II) enhanced thin film c-Si solar cells,” Journal of Computational Electronics 15, pp. 248-259, 2016
  • Sabina Abdul Hadi, Eugene A. Fitzgerald, and Ammar Nayfeh. “Theoretical efficiency limit for a two-terminal multi-junction “step-cell” using detailed balance method.” Journal of Applied Physics 119, no. 7, 073104, 2016.
  • Sueda Saylan, Timothy Milakovich, Sabina Abdul Hadi, Ammar Nayfeh, Eugene A Fitzgerald, Marcus S Dahlem “Multilayer antireflection coating design for GaAs 0.69 P 0.31/Si dual-junction solar cells,” Solar Energy vol. 122, p. 76-86, 2015.
  • Nazek El-Atab, Berk Berkan Turgut, Ali K. Okyay, Munir Nayfeh, and Ammar Nayfeh, “Enhanced non-volatile memory characteristics with Quattro-layer graphene-nanoplatelets vs. 2.85-nm Si-nanoparticles with asymmetric Al2O3/HfO2tunnel oxide” Nanoscale Res. Lett, vol. 10, no.1, p. 248 (2015).
  • Kazi Islam, Farsad Imtiaz Chowdhury, Ali K. Okyay, Ammar Nayfeh “Comparative study of thin film nip a-Si: H solar cells to investigate the effect of absorber layer thickness on the plasmonic enhancement using gold nanoparticles,” Solar Energy, vol. 120, p. 257-262, 2015
  • Sabri Alkis, Farsad Imtiaz Chowdhury, Mustafa Alevli, Nikolaus Dietz, Berna Yalızay, Selçuk Aktürk, Ammar Nayfeh, Ali Kemal Okyay “Enhancement of polycrystalline silicon solar cells efficiency using indium nitride particles,” Journal of Optics, vol. 17, no. 10, p. 105903, 2015.
  • Ghada H Dushaq, Amro Alkhatib, Mahmoud S Rasras, Ammar M Nayfeh, “Structural characterization of electric-field assisted dip-coating of gold nanoparticles on silicon,”AIP Advances vol. 5, no. 9, 097181, 2015
  • Evelina Polyzoeva, Sabina Abdul Hadi, Ammar Nayfeh, Judy L Hoyt “Reducing optical and resistive losses in graded silicon-germanium buffer layers for silicon based tandem cells using step-cell design,”AIP Advances vol. 5, no. 5, p. 057161, 2015
  • Nazek El-Atab, Ayman Rizk, Burak Tekcan, Sabri Alkis, Ali K. Okyay, and Ammar Nayfeh, “Memory effect by charging of ultra-small 2-nm laser-synthesized solution processable Si-nanoparticles embedded in Si-Al2O3-SiO2structure” Phys. Status Solidi A, vol. 212, no. 2 Feb (2015)
  • Sabina Abdul Hadi, T. Milakovich, M.T Bulsara, S. Saylan, M.S Dahlem, E.A. Fitzgerald, and Ammar Nayfeh,  “Design Optimization of Single-Layer Antireflective Coating for GaAs1-xPx/Si Tandem Cells With  x= 0, 0.17, 0.29, and 0.37”, IEEE Journal of Photovoltaics, Volume 5 Number 1 Jan 2015.
  • Nazek El-Atab, Furkan Cimen, Sabri Alkis, Ali K. Okyay and Ammar Nayfeh “Enhanced memory effect with embedded graphene nanoplatelets in ZnO charge trapping layer,”  Appl. Phys. Lett. 105, 033102 (2014).
  • Nazek El-Atab, Ayse Ozcan, Sabri Alkis, Ali K. Okyay, and Ammar Nayfeh “Silicon nanoparticle charge trapping memory cell”, physica status solidi (RRL) – Rapid Research Letters Volume 8, Issue 7, pages 629–633, July 2014
  • Nazek El-Atab, Ayse Ozcan, Sabri Alkis, Ali K. Okyay, and Ammar Nayfeh “Low power zinc-oxide based charge trapping memory with embedded silicon nanoparticles via poole-frenkel hole emission”, Appl. Phys. Lett. 104, 013112 (2014)
  • Sabina Abdul Hadi, Pouya Hashemi, Nicole DiLello, Evelina Polyzoeva, Ammar Nayfeh,  Judy L. Hoyt, “Thin-film Si1−xGex HIT solar cells”, Solar Energy Volume 103, May 2014Pages 154-159.
  • Kazi Islam, Aaesha Alnuaimi, Enes Battal, Ali Kemal Okyay, Ammar Nayfeh, “Effect of gold nanoparticles size on light scattering for thin film amorphous-silicon solar cells”, Solar Energy Volume 103, May 2014Pages 263–268.
  • Nazek El-Atab, Furkan Cimen, Sabri Alkis, Bülend Ortaç, Mustafa Alevli, Nikolaus Dietz, Ali K. Okyay and Ammar Nayfeh “Enhanced memory effect via quantum confinement in 16 nm InN nanoparticles embedded in ZnO charge trapping layer”, Appl. Phys. Lett. 104, 253106 2014.
  • Sabina Abdul Hadi, P. Hashemi, Nicole DiLello, A. Nayfeh, and J. Hoyt, “Effect of germanium fraction on the effective minority carrier lifetime in thin film amorphous-Si/crystalline-Si1xGex/crystalline-Si heterojunction Solar Cells”, AIP Advances 3 (5), 052119-052119-6), 2013.
  • Amro Alkhatiband Ammar Nayfeh, “A Complete Physical Germanium-on-Silicon Quantum Dot Self-Assembly Process” Nature Scientific Reports 3, Article number: 2099, 2013
  • Sabri Alkis, Burak Tekcan, Ammar Nayfeh, Ali Kemal Okyay,  “UV/vis range photodetectors based on thin film ALD grown ZnO/Si heterojunction diodes” Journal of Optics, Vol 15 Issue 10 page 105002, 2013
  • Nazek El-Atab, Samar Alqatari, Feyza B. Oruc, Tewfic Souier, Matteo Chiesa, Ali K. Okyay, and Ammar Nayfeh” Diode behavior in ultra-thin low temperature ALD grown zinc-oxide on silicon” AIP Advances 3, 102119 (2013).
  • Nazek El-Atab, Ayman Rizk, Ali K. Okyay, and Ammar Nayfeh “Zinc-oxide charge trapping memory cell with ultra-thin chromium-oxide trapping layer”, AIP Advances 3, 112116 (2013).
  • Aaesha Alnuaimi, Kazi Islam, Ammar Nayfeh, “Reduction of interface traps at the amorphous-silicon/crystalline-silicon interface by hydrogen and nitrogen annealing”, Solar Energy Volume 98, Part C, December 2013, Pages 236–240.
  • Aaesha Alnuaimi, Ammar Nayfeh and Viktor Koldyaev “­­­­Electric Field and Temperature Dependence on the Activation Energy Associated with Gate Induced Drain Leakage (GIDL),” Journal of Applied Physics (JAP) 113 (4), pp. 044513-044513-5
  • Feyza B. Oruç, Furkan Cimen, Ayman Rizk, Mohammad Ghaffari, Ammar Nayfeh Member, and Ali K. Okyay, “Thin-Film ZnO Charge-Trapping Memory Cell Grown in a Single ALD Step” IEEE Electron Device Letters Vol. 99pp1-3
  • Efe Onaran, M Cengiz Onbasli, Alper Yesilyurt, Hyun Yong Yu, Ammar Nayfeh, Ali K Okyay, ” Silicon-Germanium multi-quantum well photodetectors in the near infrared”, Optics Express, Vol. 20, Issue 7, pp. 7608-7615, March 2012.
  • Ali K Okyay, Ammar Nayfeh, Krishna C Saraswat, Takao Yonehara, Ann Marshall, and Paul C McIntyre, ” High-efficiency metal-semiconductor-metal photodetectors on heteroepitaxially grown Ge on Si”, Optics Letters, Vol. 31, Issue 17, pp. 2565-2567, Sep 2006
  • C. Saraswat, C. O. Chui, P. Kapur, T. Krishnamohan, Ammar Nayfeh, Ali K. Okyay and R. S. Shenoy, “Performance Limitations of Si CMOS and Alternatives for Nanoelectronics,” Int. J. High Speed Electronics and Systems, Vol. 16, No. 1, pp. 175 192, (2006)
  • Krishna Saraswat, Chi On Chui, Tejas Krishnamohan, Donghyun Kim, Ammar Nayfeh, Abhijit Pethe” High performance germanium MOSFETs”, Materials Science and Engineering: B, Vol. 135, pp. 242-249, December 2006.
  • Ammar Nayfeh, Chi On Chu, Takao Yonehara, and Krishna Saraswat “Fabrication of high-quality p-MOSFET in Ge grown heteroepitaxially on Si” Electron Device Letters (EDL) Vol. 26, pp. 311-313, May 2005.
  • Ammar Nayfeh, Chi On Chu, Takao Yonehara, and Krishna Saraswat “Effects of Hydrogen Annealing on Heteroepitaxial-Ge Layers on Si: Surface Roughness and Electrical Quality” Applied Physics Letters (APL) Vol 85(14), 2815 2004
  • Zain Yamani, Sahel Ashhab, Ammar Nayfeh, W. Howard Thompson and Munir Nayfeh,”Red To Green Rainbow Photoluminescence from unoxidized silicon nanocrystallites” J.of Appl. Phys. 83(7), 3929 (1998)
Conferences and seminars
  • Ghada Dushaq, Ammar Nayfeh and Mahmoud Rasras. “Plasma Enhanced Processing of Ge Films on Silicon as a Virtual Substrate for Lattice Matched GaAs Growth” Fall MRS November 2018
  • Khadija Jumaa, Aamenah Siddiqui, Ghada Dushaq, Mahmoud Rasras, Ammar Nayfeh. “Optical and Electrical Properties of RF-PECVD Germanium Spin Coated with 40nm Silver Nanoparticles ” Fall MRS November 2018
  • Ghada Dushaq, Aamenah Siddiqui, Khadija Jumaa, Ammar Nayfeh and Mahmoud Rasras. “Direct “Growth of Thin Ge-on-Si Layer at Low Temperature as a Template for Lattice Matched GaAs Based Solar Cells” 7th World Conference on Photovoltaic Energy Conversion (WCPEC) June 2018
  • Aaesha Alnuaimi,Ibraheem Almansouri, Irfan Saadat and Ammar Nayfeh “Direct “Effect of ZnO Interfacial Layer Grown by Atomic Layer Deposition on the Performance of Graphene/Silicon Schottky Junction Solar Cells” 7th World Conference on Photovoltaic Energy Conversion (WCPEC) June 2018
  • Ghada DushaqAmmar Nayfeh and Mahmoud Rasras.”Germanium metal-semiconductor-metal photodetectors grown on Silicon using low temperature RF-PECVD.” Frontiers in Optics JW4A. 42 2017/9/18
  • Ghada Dushaq, Mahmoud Rasras, and Ammar Nayfeh. “Hydrogen-Induced Crystallization of Germanium Films at Low Temperature Using an RF-PECVD Reactor.” ECS transactions volume 77,issue 5, 213-217 2017
  • Nazek El-Atab, Farsad Chowdhury,Turkan Gamze Ulusoy, Amir Ghobadi, Amin Nazirzadeh, Ali K. Okyay and Ammar Nayfeh “Growth of ~3-nm ZnO Nano-islands Using Atomic Layer Deposition,” 16th IEEE International Conference on Nanotechnology, 2016
  • Ghada Dushaq, Nazek El-Atab,Mahmoud Rasras, and Ammar Nayfeh. “Impact of N2O/NH3/N2 Gas Mixture on the Interface Quality of Germanium MOS Capacitors.” ECS Transactions 75, no. 8, pp. 661-666, 2016.
  • Farsad Imtiaz Chowdhury, Nazek El-Atab, Aaesha Alnuaimiand Ammar Nayfeh “∼12% Efficiency improvement in a-Si thin-film solar cells using ALD grown 2-nm-thick ZnO nanoislands.” In IEEE 43nd Photovoltaic Specialist Conference (PVSC), pp. 318-322, 2016
  • Hiba Riazand Ammar Nayfeh “Optimal finger design for low concentration thin-film c-Si solar cells.” In IEEE 43nd Photovoltaic Specialist Conference (PVSC), pp. 2358-2361, 2016
  • Sabina Abdul Hadi, Tim Milakovich, Rushabh Shah, Eugene A Fitzgerald, Ammar Nayfeh”Towards demonstration of GaAs 0.76 P 0.24/Si dual junction step-cell.” In IEEE 43nd Photovoltaic Specialist Conference (PVSC), pp. 1881-1886, 2016
  • Nawal Aqab, Hiba Riaz, Ammar Nayfeh “Aluminum doped zinc oxide-silicon heterojunction solar cell by low temperature atomic layer deposition” In IEEE 43nd Photovoltaic Specialist Conference (PVSC), pp.598-601, 2016
  • Muhaira Al Eghfeli, Sabina Abdul Hadi, Nazek El Atab,Ammar Nayfeh”Demonstration of aluminum doped ZnO as anti-reflection coating.” In IEEE 43nd Photovoltaic Specialist Conference (PVSC), pp. 2765-2769 , 2016
  • Nazek El-Atab, Berk Berkan Turgut, Ali Okyay, and Ammar Nayfeh “Graphene Nanoplatelets Embedded in HfO2for MOS Memory” ECS Trans. 2015, vol. 66, no. 14, p. 39-43, 2015
  • Ghada Dushaq, Nazek El-Atab,Mahmoud Rasras, and Ammar Nayfeh. “A Study of Electrical and Optical Properties of Boron-Doped Amorphous Silicon Deposited by RF-PECVD with Different B2H6/H2 Flow Rates.” ECS Transactions 72, no. 2, pp. 301-304, 2016.
  • Nazek El-Ataband Ammar Nayfeh. “Ultra-Small ZnO Nanoparticles for Charge Storage in MOS-Memory Devices.” ECS Transactions 72, no. 5 pp. 73-79, 2016.
  • Nazek El-Atab, Berk Berkan Turgut, Ali Okyay, and Ammar Nayfeh “Charge Trapping Memory with 2.85-Nm Si-Nanoparticles Embedded in HfO2”ECS Trans. 2015, vol. 66, no. 40, p. 17-21, 2015.
  • Farsad Imtiaz Chowdhury, Kazi Islam, Sabri Alkis, Bülend Ortaç, Mustafa Alevli, Nikolaus Dietz, Ali Okyay, Ammar Nayfeh “Enhanced Light Scattering with Energy Downshifting Using 16 Nm Indium Nitride Nanoparticles for Improved Thin-Film a-Si NIP Solar Cells,”ECS Trans. 2015 volume 66, issue 40, 9-16, 2015
  • Nazek El-Atab, Berk Berkan Turgut, Ali K. Okyay and Ammar Nayfeh “An All-ALD MOS Memory with Double-Layer High-қ Tunnel Oxide Al2O3/HfO2and ZnO Charge Trapping Layer,”  15th IEEE International Conference on Nanotechnology, pp. 766 – 768, 2015
  • Nazek El-Atab, Berk Berkan Turgut, Ali K. Okyay and Ammar Nayfeh “MOS Memory with Ultrathin Al2O3-TiO2Nanolaminates Tunnel Oxide and 2.85-nm Si-Nanoparticles Charge Trapping Layer,” 15th IEEE International Conference on Nanotechnology, pp. 663-665, 2015
  • Sabina Abdul Hadi, Tim Milakovich, Mayank Bulsara, Evelina Polyzoeva, Eugene A. Fitzgerald, Judy L. Hoyt, and Ammar Nayfeh. “Theoretical efficiency limits of a 2 terminal dual junction step cell.” In IEEE 42nd Photovoltaic Specialist Conference (PVSC), pp. 1-5, 2015
  • Timothy Milakovich, Rushabh Shah, Sabina Hadi, Mayank Bulsara, Ammar Nayfeh, and Eugene Fitzgerald. “Growth and characterization of GaAsP top cells for high efficiency III- V/Si tandem PV.” In IEEE 42nd Photovoltaic Specialist Conference (PVSC), pp. 1-4. IEEE, 2015
  • Aaesha Alnuaimi, Burak Tekcan, Ali K. Okyay, and Ammar Nayfeh. “Low temperature ALD grown ZnO as emitter and TCO for a thin-film a-Si PIN solar cells.” In IEEE 42nd Photovoltaic Specialist Conference (PVSC), pp. 1-4, 2015.
  • Farsad Imtiaz Chowdhury, Aaesha Alnuaimi,Sabri Alkis, Ali K. Okyay, Munir Nayfeh, and Ammar Nayfeh. “23% increase in efficiency of 100 nm thin film a-si solar cells using combination of Si/InN and Au nanoparticles.” In IEEE 42nd Photovoltaic Specialist Conference (PVSC), pp. 1-4, 2015.
  • Ammar Nayfeh, Ali Okyay, Nazek El-Atab, Ayse Ozcan, and Sabri Alkis, “Low Power Zinc-Oxide Based Charge Trapping Memory with Embedded Silicon Nanoparticles” ECS Trans. 2014 vol. 64, no. 17, p. 45-49.
  • Nazek El-Atab, Ayse Ozcan, Sabri Alkis, Ali K. Okyay, and Ammar Nayfeh, “2-nm Laser-Synthesized Si Nanoparticles for Low-Power Charge Trapping Memory Devices,” Accepted as late-news submission for oral presentation, 14th IEEE International Conference on Nanotechnology, p. 505-509, 2014
  • Sabina Abdul Hadi, Evelina Polyzoeva, Tim Milakovich, Mayank Bulsara, Judy L Hoyt, Eugene A Fitzgerald, Ammar Nayfeh, “Novel GaAs71P0.29/Si tandem step-cell design,” 2014IEEE 40th Photovoltaic Specialist Conference (PVSC), 2014
  • Vikas Kumar, Ammar Nayfeh, “Design of Impact Ionization enhanced thin film c-Si HIT solar cells”, 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC),1059-1063
  • Farsad Chowdhury, Aaesha Alnuaimi, Kazi Islam, Ammar Nayfeh, “Efficiency enhancement in thin-film c-Si HIT solar cells using luminescent 2.85 nm silicon nanoparticles,”2014IEEE 40th Photovoltaic Specialist Conference (PVSC), 2209-2213
  • Aaesha Alnuaimi, Vikas Kumar, Farsad Chowdhury, Ammar Nayfeh, “Effect of carbon diffusion on performance of thin film c-Si HIT solar cells with a-SiC passivation layer,” 2014IEEE 40th Photovoltaic Specialist Conference (PVSC), 1197-1200
  • Kazi Islam, Farsad Chowdhury,Aaesha Alnuaimi, Ammar Nayfeh, “∼10% increase in short-circuit current density using 100nm plasmonic Au nanoparticles on thin film nip a-Si: H solar cells,” 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC), 3071-3075
  • Noura Al Wahshi, Ammar Nayfeh, “Single junction GaAs-Ge stacked tandem cell,” 2014IEEE 40th Photovoltaic Specialist Conference (PVSC), 0295-0298.
  • Sabina Abdul Hadi, P. Hashemi, Nicole DiLello, A. Nayfeh, and J. Hoyt, “Thin Film a-Si/c-Si1-xGex/c-Si Heterojunction Solar Cells with Ge Content Up To 56%”, IEEE PVSC proceedings pp.5-8, 2012
  • Aaesha Alnuaimiand Ammar Nayfeh, “Effect of Interface States (Dit) at the a-Si/c-Si Interface on the Performance of Thin Film a-Si/c-Si/c-Si Heterojunction Solar Cells”, IEEE PVSC proceedings pp.996-999 (2012)
  • Kazi Islam, Aaesha Alnuaimi, Ali Kemal Okyay and Ammar Nayfeh, “Improved Efficiency of Thin Film a-Si:H Solar Cells with Au Nanoparticles” (2013 39th Photovoltaic Specialists Conference (PVSC))
  • Sabina Abdul Hadi, P. Hashemi, A. Nayfeh, and J. L. Hoyt, “Thin-Film a-Si/c-Si1-xGex/c-Si Heterojunction Solar Cells: Design and Material Quality Requirements,” ECS Trans., vol. 41, no. 3 pp.3-14 2011
  • Sabina Abdul Hadi, Eugene A Fitzgerald, Ammar Nayfeh”GaAsP/Si Dual Junction Step-Cell for Cost Effective Manufacturing.” MRS Fall Boston November 2017 Oral Presentation
  • Aaesha Alnuaimi, Ibraheem Almansouri, and Ammar Nayfeh. ” Effect of ALD Grown Al2O3 as Interfacial Layer in Graphene/Silicon Schottky Barrier Solar Cells” EUPVSEC Sep 2017 Poster Presentation
  • Sabina Abdul Hadi, Tim Milakovich, Rushabh Shah, Eugene A Fitzgerald, Ammar Nayfeh”Detailed Characterization for TCAD Simulations of GaAs0.76P0.24/Si1-yGey/Si Single Junction Solar Cells.” In IEEE 44nd Photovoltaic Specialist Conference (PVSC), 2017 Poster Presentation
  • Hiba Riaz, Sabina Abdul Hadi, Ammar Nayfeh”Increase in Maximum Power of a-Si, c-Si and GaAs0.76P0.24 Solar Cells Under Low Concentration.” In IEEE 44nd Photovoltaic Specialist Conference (PVSC), 2017 Poster Presentation
  • Nazek El-Atab, Farsad Chowdhury, Turkan Gamze Ulusoy, Ali K. Okyay, and Ammar Nayfeh “Fabrication of Ultra-Small Zirconia Nano-Islands Using Thermal Atomic Layer Deposition,” 231th ECS meeting 2017, no 2036 New Orleans La, May 31st Oral presentation.
  • Nazek El-Atab, Farsad Chowdhury,Turkan Gamze Ulusoy, Ali K. Okyay, and Ammar Nayfeh “3-nm-Thick ZnO Nanoislands Charge Trapping Layer for Memory Devices Grown by Single ALD Step,” 230th ECS meeting 2016, no. D02-1454, Honolulu, Hawaii, October 2-7, 2016. Oral presentation.
  • Nazek El-Atab, Farsad Chowdhury,Turkan Gamze Ulusoy, Amir Ghobadi, Amin Nazirzadeh, Ali K. Okyay and Ammar Nayfeh “Growth of ~3-nm ZnO Nano-islands Using Atomic Layer Deposition,” 16th IEEE International Conference on Nanotechnology, pp. , Sendai, Japan, August 22-25, 2016. Oral presentation.
  • Ghada H. Dushaq,Mahmoud S. Rasras, and Ammar M. Nayfeh “ Electrical and Optical Characterization of Si1-xGex  Layers Grown by RF-PECVD” MRS 2016 Spring Meeting, Phoenix, Arizona, March 28 – April 1, 2016, Poster Presentation.
  • Ghada H. Dushaq,Mahmoud Rasras, Ammar Nayfeh, Structural and electrical properties of (MOS) structures prepared by electrophoreses deposition of gold nano-particles on Aluminum/ Hafnium oxides, UAEGSRC’16, Al Ain, UAE, April 27-28, 2016. Oral Presentation.
  • Ghada H. Dushaq,Mahmoud S. Rasras, and Ammar M. Nayfeh, Impact ofNH3 and N2 plasma passivation on the interface of germanium MOS capacitors, 230th ECS Fall Meeting, 2016. Oral Presentation
  • Nazek El-Ataband Ammar Nayfeh “’InN Nanoparticles and Graphene Nanoplatelets for Charge Trapping in Non-Volatile Memory Devices,” UAEGSRC’16, Al Ain, UAE, April 27-28, 2016. Oral Presentation (Best Paper Award in Micro/Nanosystems).
  • Ammar Nayfeh, Ali K. Okyay, and Nazek El-Atab“Use of Nanoparticles and Nanoplatelets in Low-Power Charge Trapping Non-volatile Memory Devices,” 2nd World Congress and Expo on Nanotechnology and Materials Science, Dubai, UAE, April 4-5, 2016.
  • Farsad Chowdhury, Aaesha Alnuaimi, Nazek El-Atab, and Ammar Nayfeh “~12% Efficiency Improvement in a-Si Thin-film Solar Cells Using ALD Grown 2-nm-thick ZnO Nanoislands,” 43rd Photovoltaic Specialists Conference, Portland, Oregon, June 5-10, 2016. Poster Presentation.
  • Muhaira Al Eghfeli, Sabina Abdul Hadi, Nazek El-Atab,and Ammar Nayfeh Demonstration of Aluminum Doped ZnO as Anti-Reflection Coating,” 43rd Photovoltaic Specialists Conference, Portland, Oregon, June 5-10, 2016. Poster Presentation.
  • Nazek El-Ataband Ammar Nayfeh “Ultra-Small ZnO Nanoparticles for Charge Storage in MOS-Memory Devices,” 229th ECS meeting 2016, no. H01-1251, San Diego, CA, May 29 – June 2, 2016. Oral presentation.
  • Ghada Dushaq, Nazek El-Atab,Mahmoud Rasras, and Ammar Nayfeh “A Study of Electrical and Optical Properties of Boron-Doped Amorphous Silicon Deposited By RF-PECVD with Different B2H6/H2 Flow Rates,” 229th ECS meeting 2016, no. D01-1014, San Diego, CA, May 29 – June 2, 2016. Oral presentation.
  • Nazek El-Atab, Farsad Chowdhury, and Ammar Nayfeh “2-nm ZnO Nano-Island Growth Using Thermal Atomic Layer Deposition,” MRS 2016 Spring Meeting, Paper , Phoenix, Arizona, March 28 – April 1, 2016, Poster Presentation
  • Muhaira Saeed Al Eghfeli, Ghada  Hamed Dushaq, Farsad  Imtiaz Chowdhury, Hiba Riaz, Nawal  Aqab,Nazek  El-Atab, Ammar  Nayfeh “Electrical Characterization of ZnO/Al2O3 Alloy Growth Using Atomic Layer Deposition,” MRS 2015 Fall Meeting, Boston, MA, November 29- December 4, 2015
  • Sabina Abdul Hadi, Tim Milakovich, Mayank Bulsara, Evelina Polyzoeva, Eugene A. Fitzgerald, Judy L. Hoyt, and Ammar Nayfeh. “Theoretical efficiency limits of a 2 terminal dual junction step cell.” In IEEE 42nd Photovoltaic Specialist Conference (PVSC), pp. 1-5, 2015.
  • Timothy Milakovich, Rushabh Shah, Sabina Abdul Hadi, Mayank Bulsara, Ammar Nayfeh, and Eugene Fitzgerald. “Growth and characterization of GaAsP top cells for high efficiency III- V/Si tandem PV.” In IEEE 42nd Photovoltaic Specialist Conference (PVSC), New Orleans, June 14-19, 2015.
  • Aaesha Alnuaimi,Burak Tekcan, Ali K. Okyay, and Ammar Nayfeh. “Low temperature ALD grown ZnO as emitter and TCO for a thin-film a-Si PIN solar cells.” In IEEE 42nd Photovoltaic Specialist Conference (PVSC), New Orleans, June 14-19, 2015.
  • Farsad Imtiaz Chowdhury, Aaesha Alnuaimi,Sabri Alkis, Ali K. Okyay, Munir Nayfeh, and Ammar Nayfeh. “23% increase in efficiency of 100 nm thin film a-si solar cells using combination of Si/InN and Au nanoparticles.” In IEEE 42nd Photovoltaic Specialist Conference (PVSC), New Orleans, June 14-19, 2015.
  • Farsad Imtiaz Chowdhury, Kazi Islam,Sabri Alkis, Bülend Ortaç, Mustafa Alevli, Nikolaus Dietz, Ali Okyay, Ammar Nayfeh “Enhanced Light Scattering with Energy Downshifting Using 16 Nm Indium Nitride Nanoparticles for Improved Thin-Film a-Si NIP Solar Cells,”ECS Meeting Abstracts, no. 2259, Chicago, Illinois, May 24-28, 2015
  • Nazek El-Atab, Berk Berkan Turgut, Ali K. Okyay and Ammar Nayfeh “An All-ALD MOS Memory with Double-Layer High-қ Tunnel Oxide Al2O3/HfO2and ZnO Charge Trapping Layer,”  15th IEEE International Conference on Nanotechnology, Rome, Italy, July 27-30, 2015.
  • Nazek El-Atab, Berk Berkan Turgut, Ali K. Okyay and Ammar Nayfeh “MOS Memory with Ultrathin Al2O3-TiO2Nanolaminates Tunnel Oxide and 2.85-nm Si-Nanoparticles Charge Trapping Layer,” 15th IEEE International Conference on Nanotechnology, Rome, Italy, July 27-30, 2015.
  • Farsad Imtiaz Chowdhuryand Ammar Nayfeh “Improved Efficiency of Thin Film a-Si p-i-n Solar Cells using Combination of Silver and Gold Plasmonic Nanoparticles,” 15th IEEE International Conference on Nanotechnology, Rome, Italy, July 27-30, 2015.
  • Nazek El-Atab, Berk Berkan Turgut, Ali Okyay, and Ammar Nayfeh “Charge Trapping Memory with 2.85-Nm Si-Nanoparticles Embedded in HfO2” 227th ECS meeting 2015, no. 2261, Chicago, Illinois, May 24-28, 2015
  • Nazek El-Atab, Berk Berkan Turgut, Ali Okyay, and Ammar Nayfeh “Graphene Nanoplatelets Embedded in HfO2 for MOS Memory” 227th ECS meeting 2015, no. 879, Chicago, Illinois, May 24-28, 2015
  • Farsad  Imtiaz  Chowdhury, Kazi  Islam,Ammar  Nayfeh, “Improved Efficiency of Thin Film a-Si p-i-n Solar Cells Using Silver and Gold Plasmonic Nanoparticles,” MRS 2015 Spring Meeting, San Francisco, CA, April 1-5,2015
  • Nazek El-Ataband Ammar Nayfeh, “Reduced Programming Voltage with SiO2/HfO2 Tunnel Oxide for SONOS Memory,” MRS 2014 Spring Meeting, BB11.28, San Francisco, CA, April 21-25, 2014
  • Aaesha Alnuaimi, Kazi Islam, Sabina Abdul Hadi, Ammar Nayfeh, “Effect of Epitaxially Grown c-Si Thickness on the Performance of Thin Film HIT Solar Cells,” MRS Spring Meeting, San Francisco, CA, April 21-25, 2014
  • Nazek El-Atab, Ayman Rizk, Ali K. Okyay, and Ammar Nayfeh, “ZnO Charge Trapping Memory Cell with Ultra-Thin Chromium Oxide Trapping Layer,” MRS 2014 Spring Meeting, Paper BB11.29, San Francisco, CA, April 21-25, 2014
  • Ammar Nayfeh, Ali K. Okyay, Nazek El-Atab, Ayse Ozcan, and Sabri Alkis, “Low Power Zinc-Oxide Based Charge Trapping Memory with Embedded Silicon Nanoparticles,” Invited, 226th ECS meeting 2014, no. 46, p. 2143-2143, Cancun, Mexico, October 5-10, 2014
  • Ammar Nayfeh, Ali K. Okyay, Nazek El-Atab, Furkan Cimen, and Sabri Alkis, “Transparent Graphene Nanoplatelets for Charge Storage in Memory Devices,” Invited, 226th ECS meeting 2014, no. 37, p. 1879-1879, Cancun, Mexico, October 5-10, 2014
  • Late news. Nazek El-Atab, Ayse Ozcan, Sabri Alkis, Ali K. Okyay, and Ammar Nayfeh, “2-nm Laser-Synthesized Si Nanoparticles for Low-Power Charge Trapping Memory Devices,” Accepted as late-news submission for oral presentation, 14th IEEE International Conference on Nanotechnology, Toronto, Canada, August 18-21, 2014
  • Nazek El-Atab, Ayman Rizk, Burak Tekcan, Sabri Alkis, Ali K. Okyay, and Ammar Nayfeh, “MOS Memory using 2-nm Silicon Nanoparticles Charge Trapping Layer,” Advances in Materials and Processing Technologies 2014 conference, Dubai, United Arab Emirates, November 16-20, 2014
  • Nazek El-Atab, Furkan Cimen, Sabri Alkis, Bülend Ortaç, Mustafa Alevli, Nikolaus Dietz, Ali K. Okyay and Ammar Nayfeh “Enhanced Retention Characteristic of MOS Charge Trapping Memory with InN Nanoparticles Embedded in ZnO Charge Trapping Layer,” MRS 2014 Fall Meeting, Paper M1.05, Boston, MA, December 1-5, 2014
  • Nazek El-Atab, Furkan Cimen, Sabri Alkis, Ali K. Okyay and Ammar Nayfeh “MOS Charge Trapping Memory with Graphene Nanoplatelets Embedded in ZnO Charge Trapping Layer,”  MRS 2014 Fall Meeting, Paper M2.02, Boston, MA, December 1-5, 2014
  • Sabina Abdul Hadi, Evelina Polyzoeva, Tim Milakovich, Mayank Bulsara, Judy L Hoyt, Eugene A Fitzgerald, Ammar Nayfeh, “Novel GaAs 0.71 P 0.29/Si tandem step-cell design,” 2014IEEE 40th Photovoltaic Specialist Conference (PVSC), Denver, Colorado, June 18-23, 2014.
  • Vikas Kumar, Ammar Nayfeh, “Design of Impact Ionization enhanced thin film c-Si HIT solar cells”, IEEE 40th Photovoltaic Specialist Conference (PVSC) Denver, Colorado, June 18-23, 2014.
  • Farsad Chowdhury, Aaesha Alnuaimi, Kazi Islam,Ammar Nayfeh, “Efficiency enhancement in thin-film c-Si HIT solar cells using luminescent 2.85 nm silicon nanoparticles,” IEEE 40th Photovoltaic Specialist Conference (PVSC) Denver, Colorado, June 18-23, 2014.
  • Aaesha Alnuaimi, Vikas Kumar, Farsad Chowdhury, Ammar Nayfeh, “Effect of carbon diffusion on performance of thin film c-Si HIT solar cells with a-SiC passivation layer,” IEEE 40th Photovoltaic Specialist Conference (PVSC) Denver, Colorado, June 18-23, 2014.
  • Kazi Islam, Farsad Chowdhury, Aaesha Alnuaimi, Ammar Nayfeh, “∼10% increase in short-circuit current density using 100nm plasmonic Au nanoparticles on thin film nip a-Si: H solar cells,” IEEE 40th Photovoltaic Specialist Conference (PVSC) Denver, Colorado, June 18-23, 2014.
  • Noura Al Wahshi, Ammar Nayfeh, “Single junction GaAs-Ge stacked tandem cell,” IEEE 40th Photovoltaic Specialist Conference (PVSC) Denver, Colorado, June 18-23, 2014.
  • Farsad Imtiaz Chowdhury, Kazi Islam, Sabri Alkis, Vikas Kumar, Buelend Ortac, Mustafa Alevli, Nikolaus Dietz, Ali Kemal Okyay, Ammar Nayfeh, “Effect of Photoluminescent Indium Nitride Nanocrystals on the Performance of a-Si:H Solar Cell,” MRS Fall Meeting, Boston, MA,November 30-December 5 2014.
  • Farsad Imtiaz Chowdhury, Kazi Islam, Aaesha Alnuaimi, Ammar Nayfeh, “Efficiency Enhancement of Thin Film c-Si HIT Cells Using Plasmonic Gold Nanoparticles,” MRS Fall Meeting, Boston, MA,November 30-December 5 2014.
  • Vikas Kumar, Aaesha Alnuaimi,Ammar Nayfeh, “Emitter Design on a-Si (n+)/c-Si (p+) Heterojunction Solar Cells,” MRS Fall Meeting, Boston, MA,November 30-December 5 2014.
  • Vikas Kumar, Ammar Nayfeh “Thin Film c-Si Solar Cell Enhanced with Impact Ionization,” 2013European Modelling Symposium (EMS), Manchester, United Kingdom, 20-22 November 2013, 2013.
  • Ayman Rizk, Kazi Islam, Ammar Nayfeh, “Modeling of InAs/GaAs Quantum Dot Solar Cells,” 2013European Modelling Symposium (EMS), Manchester, United Kingdom, 20-22 November 2013, 2013.
  • Noura Al Wahshi, Ammar Nayfeh, “Effect of the Interface States on the Key Design Parameters in c-Si HIT Solar Cells,” 2013European Modelling Symposium (EMS), Manchester, United Kingdom, 20-22 November 2013, 2013
  • Kazi Islam, Aaesha Alnuaimi,Helmy Ally, Ammar Nayfeh, “ITO, Si3N4 and ZnO: Al–Simulation of Different Anti-reflection Coatings (ARC) for Thin Film a-Si: H Solar Cells,” 2013European Modelling Symposium (EMS), Manchester, United Kingdom, 20-22 November 2013, 2013.
  • Kazi Islam, Aaesha Alnuaimi, Ali Kemal Okyay and Ammar Nayfeh, “Improved Efficiency of Thin Film a-Si:H Solar Cells with Au Nanoparticles” 39th Photovoltaic Specialists Conference (PVSC), Tampa, FL, June 16-21, 2013.
  • Samar Alqatari, Feyza B. Oruc,Tewfik Souier1, Matteo Chiesa, Ali K. Okyay and Ammar Nayfeh, “Thin Film ALD Grown ZnO(n)/Si(P+) Heterojunction Diode”, MRS 2013Spring Meeting, San Francisco, CA, June 30-July 1, 2013.
  • Kazi Islamand Nayfeh, “Simulation of a-Si/c-GaAs/c-Si Heterojunction Solar Cells,” IEEE Computer Modeling and Simulation (EMS), 2012Sixth UKSim/AMSS European Symposium, Malta, 14-16 November2012.
  • Ayman Rizkand Ammar Nayfeh “ZnO Charge Trap Memory with embed nano-particles,” 12th IEEE International Conference on Nano Technology (IEEE-Nano) Birmingham, United Kingdom, August 20-24, 2012
  • Ayman Rizk and Ammar Nayfeh “Si Nanowire Memory Cell,” 12th IEEE International Conference on Nano Technology (IEEE-Nano) Birmingham, United Kingdom, August 20-24, 2012
  • Sabina Abdul Hadi, P. Hashemi, Nicole DiLello, A. Nayfeh, and J. Hoyt, “Thin Film a-Si/c-Si1-xGex/c-Si Heterojunction Solar Cells with Ge Content Up To 56%”, 38th IEEE PVSC proceedings Austin, Texas, June 3-8, 2012
  • Aaesha Alnuaimiand Ammar Nayfeh, “Effect of Interface States (Dit) at the a-Si/c-Si Interface on the Performance of Thin Film a-Si/c-Si/c-Si Heterojunction Solar Cells”, 38th IEEE PVSC proceedings Austin, Texas, June 3-8, 2012
  • Sabina Abdul Hadi, Hashemi, Nicole DiLello, A. Nayfeh, and J. Hoyt, “Effect of c-Si1-xGexThickness Grown by LPCVD on the Performance of Thin-Film a-Si/c-Si1-xGex/c-Si Heterojunction Solar Cells”, MRS Proceedings Vol.1447 2012
  • Amro Alkhatib, Matteo Chiesa and Ammar Nayfeh,“Ordered Self-Assembly of Ge Quantum-Dots for Quantum Computing and Memory Applications” MRS 2012
  • Sabina Abdul Hadi, P. Hashemi, A. Nayfeh, J. L. Hoyt, “a-Si/c-Si1-xGex/c-Si Heterojunction Solar Cells,” 2011International Conference Simulation of Semiconductor Processes and Devices (SISPAD), Osaka, Japan, September 8-10, 2011
Book Chapters
  • Nazek El-Atab,Ali K. Okyay, and Ammar Nayfeh, Jan 2016, “Two-nm Laser Synthesized Si-Nanoparticles for Low Power Memory Applications,” in Ibrahim Elfadel and Gerhard Fettweis (eds.), 3D Stacked Chips: From Emerging Processes to Heterogeneous Systems, Springer International Publishing, pp. 129-156; ISBN: 978-3-319-20480-2
  • “Fundamentals and Applications of Nano Silicon in Plasmonics and Fullerines” 1st Edition Munir Nayfeh eBook ISBN: 9780323480581 Hardcover ISBN: 9780323480574 Elsevier Published Date: 25th June 2018
Patents
  • Ammar Nayfeh, Chi On Chu, Takao Yonehara, and Krishna Saraswat “A Method for Heteroepitaxial Growth of Germanium on Silicon“United States Patent 7495313, 7919381
  • Munir H Nayfeh, Laila Abuhassan, Ammar Nayfeh, Yia-chung Chang, GERMANIUM AND GERMANIUM ALLOY NANOPARTICLE AND METHOD FOR PRODUCING THE SAME“United States Patent 1756335
  • Sabina Abdul Hadi, Eugene A. Fitzgerald, and Ammar NayfehMETHOD AND DEVICE FOR LOW COST, HIGH EFFICIENCY STEP PHOTOVOLTAIC CELLSPCT/US2017/05633

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