Education:
Ph.D., City University of New York Graduate Center - 1987 (Electrical Engineering)
Areas of Expertise:
Designing, fabricating and characterizing semiconductor optoelectronic devices based on the fundamental understanding of semiconductor crystal structures, electronic states and electron-photon interactions in semiconductors.
Doctoral Rotation Projects:
Shum's renewed research interest focuses on the exploratory work from novel materials synthesis to device innovation using known physics. Currently there are three funded research projects (available on Shum's website) and a few other active projects for attracting external research funding. Shum's nanophotonics laboratory is equipped with a few essential experimental apparatuses for measuring photoluminescence/electroluminescence spectra, photoluminescence excitation spectra, Raman spectra, absorption/transmission spectra, and time-resolved photoluminescence spectra. Through the shared equipment on the campus, this laboratory is also capable of synthesizing new materials and their nano-structures. Students in the Ph.D./master's program are welcome to discuss their ideas with Shum and to explore the capability of this research laboratory, located in 149 Ingersoll Hall Extension.
Books and Publications
Chonglong, Yu, Z. Chen and K. Shum. "Triply Resonant Raman Scattering in Perovskite Semiconductor CsSnI3." Journal of Raman Spectroscopy 44: 262. (Books and Publications: Peer Reviewed Article) 2013
Chen, Zhuo, Chonglong Yu, Kai Shum, Jian J. Wang, William Pfenninger, Nemanja Vockic, John Midgley and John T. Kenney. "Photoluminescence Study of Polycrystalline CsSnI3 Thin Films: Determination of Exciton Binding Energy." Journal of Luminescence 132: 345. (Books and Publications: Peer Reviewed Article) 2012
Chen, Zhuo, J.J. Wang, Y. Ren, C. Yu and K. Shum. "Schottky Solar Cells Based on CsSnI3 Thin-films." Applied Physics Letters 101: 093901. (Books and Publications: Peer Reviewed Article) 2012
Chonglong Yu, Zhuo Chen, Jian J. Wang, William Pfenninger, Nemanja Vockic, John T. Kenney and Kai Shum. "Temperature Dependence of the Band Gap of Perovskite Semiconductor Compound CsSnI3." Journal of Applied Physics 110: 063526. (Books and Publications: Peer Reviewed Article) 2011
Chen, Zhuo, Kai Shum, T. Salagaj, Wei Zhang and K. Strobl. "ZnO Thin Films Synthesized by Chemical Vapor Deposition." IEEE Xplore. (Books and Publications: Peer Reviewed Article) 2010
Shum, Kai, Zhuo Chen, Jawad Qureshi, Chonglong Yu, Jian J. Wang, William Pfenninger, Nemanja Vockic, John Midgley and John T. Kenney. "Synthesis and Characterization of CsSnI3 Thin Films." Applied Physics Letters 96: 221903. (Books and Publications: Peer Reviewed Article) 2010
Chen, Zhuo, T. Salagaj, C. Jenson, K. Strobl, Mim Nakarmi and Kai Shum. "ZnO Nanostructures Epitaxially Grown on ZnO Seeded Si (100) Substrates by Chemical Vapor Deposition." Materials Resource Society Symposium Proceedings 1178: AA06-21. (Books and Publications: Peer Reviewed Article) 2009
Chen, Zhuo, T. Salagaj, C. Jenson, K. Strobl, Mim Nakarmi. and Kai Shum. "ZnO Thin Film Deposition on Sapphire Substrates by Chemical Vapor Deposition." Materials Research Society Symposium Proceedings 1167: O07-09. (Books and Publications: Peer Reviewed Article) 2009
Chen, Zhuo, T. Salagaj, C. Jenson, K. Strobl, V. Hongpinyo, Boon Ooi, Mim Nakarmi and Kai Shum. "Two-photon Absorption Induced Photoluminescence in a ZnO Nanostructure." Materials Resource Society Symposium Proceedings 1178: AA09-13. (Books and Publications: Peer Reviewed Article) 2009
Shum, Kai and Shi Jim. "Accurate Determination of Carrier Density and Mobility in Organic Semi-conducting Materials." Materials Resource Society Peer Reviewed Proceedings. (Books and Publications: Peer Reviewed Article) 2009
Wang, Jian J., Zhuo Chen, Jawad Qureshi, M. Pfenninger, N. Vockic, J. Kenney and Kai Shum. "Photovoltaic Study of Perovskite Semiconductor CsSnI3 Thin Films." Materials Research Society Peer Reviewed Proceedings. (Books and Publications: Book) 2009
For Professor Shum's publication list before 2008, visit Shum's research website:
http://userhome.brooklyn.cuny.edu/kshum/documents/shum_s_publication_list_000.pdf. (Books and Publications: Peer Reviewed Article) 2008
Creative Work
Created one of the most advanced research laboratories in the City University of New York system. This laboratory, located in 147-149 Ingersoll Hall Extension, is now capable of carrying out many research projects in the area of nano-materials/structures based optoelectronics. 2007
Research Activities
A research contract entitled "Cu(In, Ga)Se2-based Thin Film Solar Cells" has been signed by the Research Foundation of the City University of New York and Sun Harmonics Ltd. The research conducted under this contract will be partially funded by the CUNY Center for Advanced Technology, designated by New York State Foundation for Science, Technology and Innovation. 2010
"Synthesis of Uniform ZnO Nanowire Arrays Over a Large Area." Accepted by NSTI Nanotech 2008 conference. 2008
A sponsored research agreement has been signed between FirstNano/CVD and Brooklyn College/NYSTAR-CAT to develop ZnO nano materials and related devices. 2008
A sponsored research agreement has been signed between OmniPV Inc. and the Research Foundation of CUNY to develop new perovskite semiconductor thin films for phootovoltaic device applications. June 1, 2008-May 30, 2010. 2008
