Research
GaAs high efficiency ultrathin film solar cells
W. Yang, et al., J. Appl. Phys. 115, 203105 (2014).
This paper reports the proposal, design, and demonstration of ultra-thin GaAs single-junction solar cells integrated with a reflective…
II-VI Semiconductor Solar Cells
J.-J. Li, L. et al., Applied Physics Letters 101, 061915-061915. (2012)
CdSe/CdTe type-II superlattices grown on GaSb substrates by molecular beam epitaxy are studied using time-resolved…
Multijunction solar cell testing
S. H. Lim, et al., Progress in Photovoltaics: Research and Applications, (2011).
The effects of luminescence coupling on the external quantum efficiency (EQE) measurement of an InGaP…
Theory
D. Ding, et al., J. Appl. Phys. 110, 123104 (2011).
A semi-analytical model is constructed for single- and multi-junction solar cells. Four typical planar structures with the combinations…
Type-II Superlattice Semiconductors for Infrared Photodetectors
Type-II Superlattice Semiconductors for Infrared Photodetectors
E. H. Steenbergen, et al., Appl. Phys. Lett. 99, 251110 (2011).
Time-resolved photoluminescence…
Heterovalent Semiconductor Structure: MBE growth and characterization
MBE growth of various kinds of III-V and II-VI compound semiconductors.
A unique twin-chamber MBE system allows growth of any composition of III-V and II-VI alloys. Monolithic…
LEDs and Electroluminescence Refrigeration
Photon extraction factor vs spontaneous emission efficiency for the maximum photon recycling case in a and for the minimum photon recycling case in b. The cooling efficiency is positive in the…
Two Color Detectors
E. H. Steenbergen, et al. Appl. Phys. Lett. 97 161111-161114 (2010).
A two-terminal multicolor photodetector that is most advantageous for greater than two bands is proposed. Individual…