Helena Silva
Assistant Professor
Office: ITE Building 457
Phone: (860) 486-5517
Email: hsilva@engr.uconn.edu

Group Page: Nanoelectronics Lab

Education:
Ph.D. Applied Physics, Cornell University (2005)
M.S. Applied Physics, Cornell University (2002)
Lic., Engineering Physics, Universidade Tecnica de Lisboa (1998)

Research Interests:
Novel structures and materials for nanoelectronic devices, electronic and thermal transport at small scales, non-volatile memory devices, large area electronics, solar cells, sensors, nanofabrication techniques.

Memberships:
American Physical Society (APS)
Institute of Electrical and Electronics Engineers (IEEE)
Materials Research Society (MRS)

Publications

Journal Articles

G. Bakan, A. Cywar, H. Silva and A. Gokirmak, "Melting and crystallization of nanocrystalline silicon microwires through rapid self-heating," Appl. Phys. Lett., vol. 94, pp. 251910, 2009.

A. Cywar, G. Bakan, C. Boztug, H. Silva and A. Gokirmak, "Phase-change oscillations in silicon microwires," Appl. Phys. Lett., vol. 94, pp. 072111, 2009.

K. M. Fan, C. S. Lai, H. Silva, C. F. Ai and C. R. Chen, "Programming Speed Enhancement by NH Plasma Nitridation of Tunneling Oxide for Ge Nanocrystals Memory," J. Electrochem. Soc., vol. 155, pp. H889, 2008.

K. J. Lee, R. LaComb, B. Britton, M. Shokooh-Saremi, H. Silva, E. Donkor, Y. Ding and R. Magnusson, "Silicon-Layer Guided-Mode Resonance Polarizer With 40-nm Bandwidth," IEEE Photonics Technology Letters, vol. 20, pp. 1857-1859, 2008.

H. Silva and S. Tiwari, "Random telegraph signal in nanoscale back-side charge trapping memories," Appl. Phys. Lett., vol. 88, pp. 102105, 2006.

H. Silva and S. Tiwari, "A nanoscale memory and transistor using backside trapping," Nanotechnology, IEEE Transactions on, vol. 3, pp. 264-269, 2004.

H. Silva, M. K. Kim, U. Avci, A. Kumar and S. Tiwari, "Nonvolatile Silicon Memory at the Nanoscale," MRS Bull, pp. 845, 2004.

M. K. Kim, S. D. Chae, H. S. Chae, J. H. Kim, Y. S. Jeong, J. W. Lee, H. Silva, S. Tiwari and C. W. Kim, "Ultrashort SONOS Memories," Nanotechnology, IEEE Transactions on, vol. 3, pp. 417-424, 2004.

S. Tiwari, J. A. Wahl, H. Silva, F. Rana and J. J. Welser, "Small silicon memories: confinement, single-electron,. and interface state considerations," Appl. Phys. A, vol. 71, pp. 403-414, 2000.

V. Chu, H. Silva, L. M. Redondo, C. Jesus, M. F. Silva, J. C. Soares and J. P. Conde, "Ion implantation of microcrystalline silicon for low process temperature top gate thin film transistors," Thin Solid Films, vol. 337, pp. 203-207, 1999.

V. Chu, J. Jarego, H. Silva, T. Silva, M. Reissner, P. Brogueira and J. P. Conde, "Improved mobility of amorphous silicon thin-film transistors deposited by hot-wire chemical vapor deposition on glass substrates," Appl. Phys. Lett., vol. 70, pp. 2714, 1997.

Published Conference Proceedings

G. Bakan, A. Cywar, C. Boztug, M. Akbulut, H. Silva and A. Gokirmak, "Annealing of nanocrystalline silicon micro-bridges with electrical stress," in Mater. Res. Soc. Symp. Proc. Fall 2008, 2009, pp. LL03-25. Mater. Res. Soc. Symp. Proc.

G. Bakan, K. Cil, A. Cywar, H. Silva and A. Gokirmak, "Measurements of liquid silicon resistivity on silicon microwires," in Mater. Res. Soc. Symp. Proc. Spring 2009, 2009, pp. AA06-06. Mater. Res. Soc. Symp. Proc.

G. Bakan, A. Cywar, K. Cil, F. Dirisaglik, H. Silva and A. Gokirmak. Phase-change oscillations in silicon wires. Presented at IEEE Device Research Conference Digest. IEEE DRC 2009

C. Boztug, G. Bakan, M. Akbulut, N. Henry, A. Gokirmak and H. Silva, "Numerical modeling of electrothermal effects in silicon nanowires," in Mater. Res. Soc. Symp. Proc. Spring 2008, 2008, pp. R04-11. Mater. Res. Soc. Symp. Proc.

A. Gokirmak and H. Silva. Composite shallow trench isolation using silicon nitride and doped polysilicon for ultra-low-power CMOS. Presented at 212th Electrochem. Soc. Meeting. 212th Electrochem. Soc. Meeting, Washington D.C.

A. Gokirmak and H. Silva. PentaGate silicon MOSFET. Presented at IEEE - Device Research Conference Digest. IEEE DRC 2007

S. Tiwari, A. Kumar, C. C. Liu, H. Lin, S. K. Kim and H. Silva, "Electronics at nanoscale: Fundamental and practical challenges, and emerging directions," in 2006, pp. 481-486. Emerging Technologies-Nanoelectronics, 2006 IEEE Conference on

H. Silva and S. Tiwari, "Back-side storage non-volatile memories: Ultra-thin silicon single crystal silicon layers with complex thin film structure underneath," in Proc. of Mater. Res. Soc. 2004, pp. D1.4.

S. Tiwari, U. E. Avci, C. C. Liu, L. Xue, A. Kumar, S. K. Kim and H. Silva, "Are we there yet? looking beyond the end of scaling in the nanometer era," in 2003, pp. 456. Proceedings of SPIE

H. Silva, M. K. Kim, A. Kumar, U. Avci and S. Tiwari, "Few electron memories: Finding the compromise between performance, variability and manufacturability at the nano-scale," in 2003, pp. 10.5. Electron Devices Meeting, 2003.IEDM'03 Technical Digest.IEEE International

H. Silva, M. K. Kim, C. W. Kim and S. Tiwari, "Scaled front-side and back-side trapping SONOS memories on SOI," in 2003, pp. 105-106. SOI Conference, 2003.IEEE International

V. Chu, J. Jarego, H. Silva, T. Silva, M. Boucinha and J. P. Conde, "Amorphous silicon thin-film transistors with a hot-wire active-layer deposited at high growth rate," in 1999, pp. 905-909. Mater. Res. Soc. Symp. Proc. Vol. 467

J. P. Conde, H. Silva and V. Chu, "The effect of hydrogen dilution on hot-wire thin-film transistors," in 1999, pp. 909-914. Mater. Res. Soc. Symp. Proc. Vol. 467

J. A. Wahl, H. Silva, A. Gokirmak, A. Kumar, J. J. Welser and S. Tiwari, "Write, erase and storage times in nanocrystal memories and the roleof interface states," in 1999, pp. 375-378. Electron Devices Meeting, 1999.IEDM Technical Digest.International