Alex Z. Kattamis, Ph.D.

Dr. Kattamis’ expertise is in the field of semiconductor devices and materials and includes thin-film transistors (TFTs), circuit design, and fabrication. He also has significant experience in thin-film mechanics, especially involving processing devices on polymer and metal foil substrates. His fabrication experience includes processing by plasma-enhanced chemical vapor deposition, reactive-ion etching, sputter deposition, and photolithography. Along with this, he has experience in analog electronics and firmware for current sensing and protection applications.

Dr. Kattamis received his M.A. and Ph.D. in Electrical Engineering (EE) at Princeton University where he worked in the Electronic Materials and Devices branch of the EE department. His Ph.D. research focused on flexible large-area electronics (macroelectronics), including the design and fabrication of TFT backplanes for organic light-emitting displays and reflective electrophoretic displays on flexible metal foils and polymer substrates. While at Princeton University, Dr. Kattamis also assumed teaching responsibilities. He was an Assistant in Instruction (AI) for three courses: microfabrication, digital electronics, and basic circuits. As a McGraw Fellow he also had the opportunity to mentor new AIs in the techniques of “active-learning.” Dr. Kattamis currently holds an academic position as an Adjunct Assistant Professor in the Department Physics at the Polytechnic Institute of NYU.

Prior to his Ph.D., Dr. Kattamis worked and interned at General Electric Industrial Systems, where he was involved in the design and implementation of electronic trip units and current sensing systems for industrial metering and switchgear applications. This included analog electronics design, modeling, and firmware coding for product prototyping. He also developed expertise in current transformers and switching current power supplies, work for which he was awarded the Student Intern/Co-op Contribution Award. During his time at the University of Connecticut, where he earned a B.S.E, he worked on a number of electronics device design projects funded by the National Science Foundation for Biomedical applications.

D’Andrade B, Kattamis AZ. Flexible solid state lighting. Optics and Photonics for Advanced Energy Technology, OSA Technical Digest WB4, 2009.

D’Andrade B, Kattamis AZ. Flexible active-matrix organic light emitting displays. Silicon Valley Engineering Council J 2009; 1:18–21.

Hekmatshoar B, Cherenack K, Kattamis AZ, Long K, Wagner S, Sturm JC. Highly stable amorphous-silicon thin-film transistors on clear plastic. Appl Phys Lett 2008; 93:032103–1–3.

Hekmatshoar B, Cherenack K, Long K, Kattamis AZ, Wagner S, Sturm JC. AMOLED reliability with a-Si TFT’s in normal vs. inverted TFT/OLED integration scheme. 66th Dev Res Conf 2008; 243–244.

Kattamis AZ, Cherenack KH, Cheng I-C, Long K, Sturm JC, Wagner S. Fracture mechanisms of SiNx thin-films on compliant substrates. Mat Res Soc Symp Proc 2008; 1078-M14-02.

Hekmatshoar B, Kattamis AZ, Cherenack K, Wagner S, Sturm JC. A novel TFT-OLED integration for OLED-independent pixel programming in amorphous-Si AMOLED pixels. J Soc Info Disp 2008; 16.

Hekmatshoar B., Kattamis AZ, Cherenack KH, Long K, Chen J-Z, Wagner S, Sturm JC, Rajan K, Hack M. Reliability of active-matrix organic light-emitting-diode arrays with amorphous silicon thin-film transistor backplanes on clear plastic. IEEE Elec Dev Lett2008; 29.

Yongtaek H, Chung S, Kattamis A, Cheng I-C, Wagner S. Technical issues of stainless steel foil substrates for OLED display applications. Proc. SPIE 2007; 6655:66550N.

Cherenack KH, Kattamis AZ, Hekmatshoar B, Sturm JC, Wagner S. Amorphous-silicon thin-film transistors fabricated at 300C on a free-standing foil substrate of clear plastic. IEEE Elec Dev Lett 2007; 28:1004–1006.

Carcia PF, McLean RS, Reilly MH, Crawford MK, Blanchard EN, Kattamis AZ, Wagner S. A comparison of zinc oxide thin-film transistors on silicon oxide and silicon nitride gate dielectrics. J Appl Phys 2007; 102:074512–074519.

Kattamis AZ, Cherenack KH, Hekmatshoar B, Cheng I-C, Gleskova H, Sturm JC, Wagner S. Effect of SiNx gate dielectric deposition power and temperature on a-Si:H TFT stability. IEEE Elec Dev Lett 2007; 28:606–608.

Long K, Kattamis AK, Cheng I-C, Gleskova H, Wagner S, Sutrm JC. Amorphous-silicon thin-film transistors made at 280°C on clear-plastic substrates by interfacial stress engineering. J Soc Info Disp 2007; 15:167–176.

Kattamis AZ, Giebink N, Cheng I-C, Hong Y, Cannella V, Forrest SR, Wagner S. Active-matrix organic light emitting display employing two thin film transistor a-Si:H Pixels on flexible stainless steel foil. J Soc Info Disp 2006; 15:433–437.

Kattamis AZ, Cheng I-C, Long K, Hekmatshoar B, Cherenack K, Wagner, S, Sturm JC, Venugopal S, Loy DE, O’Rourke SM, Allee DR. Amorphous silicon thin film transistor backplanes deposited at 200ºC on clear plastic. IEEE J Disp Tech 2006; 2:304–308.

Kattamis AZ, Giebink N, Cheng I-C, Hong Y, Cannella V, Forrest SR, Wagner S. AMOLED backplanes of amorphous silicon on steel foils. Proc Inter Disp Res Conf SID 2006; 9.3.

Kattamis AZ, Cheng I-C, Long K, Forrest SR, Sturm JC, Wagner S. Amorphous silicon 2-TFT pixel circuits on stainless steel foils. Mat Res Soc Symp Proc 2006; 936E:0910-A16-03-L09-03.

Long K, Kattamis AZ, Cheng I-C, Sturm JC, Wagner S, Stevenson M, Yu G, O’Reagan M. Active-matrix amorphous-silicon TFTs arrays at 180ºC on clear plastic and glass substrates for organic light-emitting displays. IEEE Trans Elec Dev 2006; 53:1789–1796.

Cheng I-C, Kattamis AZ, Long K, Sturm JC, Wagner S. Self-aligned amorphous-silicon thin-film transistors on clear plastic substrates. IEEE Elec Dev Lett 2006; 27:166–168.

Long K, Kattamis AZ, Cheng I-C, Gleskova H, Wagner S, Sturm JC. Stability of amorphous-silicon thin-film transistors deposited on clear plastic substrates at 250°C to 280°C. IEEE Elec Dev Lett 2006; 27:111–113.

Kattamis AZ, Holmes RJ, Cheng I-C, Long K, Forrest SR, Sturm JC, Wagner S. High Mobility Nanocrystalline Silicon Transistors on Clear Plastic Substrates. IEEE Elec Dev Lett 2006; 27:49–51.

Kattamis AZ, Cheng I-C, Sturm JC, Wagner S. Nanocrystalline silicon thin film transistors on optically clear polymer foil substrates. Proceedings, Mat Res Soc Symp Proc 2005; 870:H2.7.1–6.

Cheng I-C, Kattamis AZ, Long K, Sturm JC, Wagner S. Stress control for overlay registration in a-Si:H TFTs on flexible organic-polymer-foil substrate. J Soc Info Disp 2005; 13:563–568.

Kattamis AZ, Cheng I-C, Allen S, Wagner S. Hydrogen in ultralow temperature SiO2 for nanocrystalline silicon thin film transistors. Proceedings, Mat Res Soc Symp Proc 2004; 814:I10.14.1–6.

Published Abstracts of Presentations

Kattamis AZ, Cherenack K, Hekmatshoar B, Cheng I-C, Sturm JC, Wagner S. Amorphous silicon thin-film transistor backplanes fabricated on a clear plastic substrate at 300ºC. 22nd International Conference on Amorphous and Nanocrystalline Semiconductors, 2007.

Kattamis AZ, Cheng I-C, Long K, Cherenack K, Hekmatshoar B, Sturm JC, Wagner S. Amorphous silicon thin-film transistor backplanes deposited at high temperature on clear plastic for electrophoretic displays. Electronic Materials Conference, 2007.

Kattamis AZ, Cheng I-C, Long K, Sturm JC, Wagner S. Effect of SiNx gate dielectric deposition power on the electrical stability of a-Si:H TFTs. Materials Research Society Spring Meeting, 2007.

Kattamis AZ, Hekmatshoar B, Cherenack K, Wagner S, Sturm JC, Venugopal S, Loy DE, O’Rourke SM, Allee DR. Amorphous silicon thin-film transistor backplanes processed at high temperatures on clear plastic for flexible electrophoretic displays. 6th Annual Flexible Display and Microelectronics Conference of USDC, 2007.

Kattamis AZ, Cheng I-C, Long K, Sturm JC, Wagner S. Built-in strain in silicon nitride films on polymer foils. Electronic Materials Conference, 2006.

Kattamis AZ, Giebink N, Cheng I-C, , Hong Y, Cannella V, Forrest SR, Wagner S. AMOLED backplanes of amorphous silicon on steel foils. International Display Research Conference SID 9.3, 2006.

Kattamis AZ, Cheng I-C, Long K, Forrest SR, Sturm JC, Wagner S. Amorphous silicon 2-TFT pixel circuits on stainless steel foils. Materials Research Society Spring Meeting, 2006.

Kattamis AZ, Holmes RJ, Cheng I-C, Long K, Forrest SR, Sturm JC, Wagner S. Nanocrystalline silicon TFTs on Clear Plastic Foil for Flexible OLED Displays. 21st International Conference on Amorphous and Nanocrystalline Semiconductors, 2005.

Kattamis AZ, Cheng I-C, Long K, Sturm JC, Wagner S. Dimensionally stable processing of a-Si TFTs on polymer substrates. Electronic Materials Conference, 2005.

Kattamis AZ, Cheng I-C, Sturm JC, Wagner S. Nanocrystalline silicon thin film transistors on optically clear polymer foil substrates. Materials Research Society Spring Meeting, 2005.

Kattamis AZ, Cheng I-C, Allen S, Wagner S. Hydrogen in ultralow temperature SiO2 for nanocrystalline silicon thin film transistors. Materials Research Society Spring Meeting, 2004.

• Research Assistant; Princeton University (2002–2007)
• Design Engineer; General Electric Industrial Systems (Summer 2001, 2002)
  

• Institute of Electrical and Electronic Engineers (member)
• Society for Information Display (member)
• Materials Research Society (member)
• ASM International