NDLI: Rapid thermal annealing of InAlAsSb lattice-matched to InP for top cell applications

Content Provider	IEEE Xplore Digital Library
Author	Gonzalez, M. Lumb, M.P. Hirst, L.C. Tomasulo, S. Tischler, J.G. Woojun Yoon Abell, J. Vurgaftman, I. Bennett, M.F. Schmieder, K.J. Kotulak, N.A. Yakes, M.K. Meyer, J.R. Walters, R.J.
Copyright Year	2015
Description	Author affiliation: Sotera Defense Solutions, Annapolis Junction, MD, USA (Gonzalez, M.; Bennett, M.F.) \|\| Naval Res. Lab., Washington, DC, USA (Lumb, M.P.; Hirst, L.C.; Tomasulo, S.; Tischler, J.G.; Woojun Yoon; Abell, J.; Vurgaftman, I.; Schmieder, K.J.; Kotulak, N.A.; Yakes, M.K.; Meyer, J.R.; Walters, R.J.)
Abstract	The effect of rapid thermal annealing on the optical properties of $In_{x}Al_{1-x}As$ $_{y}Sb$ $_{1-y}$ was analyzed and compared to that for $In_{0.52}$ $Al_{0.48}As.$ Initial ellipsometry and photoluminescence experiments performed before the annealing indicate the presence of a low energy Urbach tail in the absorption spectrum. Rapid thermal annealing produces a blue-shift in the PL emission when annealed at 650°C for 60s and a decrease in the full-width-half-maximum, which originates from a reduction of the emission from the longer wavelength states. For the $In_{0.52}$ $Al_{0.48}As,$ the emission energy and the full-width-half-maximum remain constant during the annealing study. The elimination of sub-bandgap states in $In_{0.52}$ $Al_{0.48}As$ is critical for achieving a realistic path towards high efficiency multijunction cells lattice-matched to InP.
Starting Page	1
Ending Page	4
File Size	7631657
Page Count	4
File Format	PDF
e-ISBN	9781479979448
DOI	10.1109/PVSC.2015.7355925
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Indium phosphide III-V semiconductor materials Photonic band gap Indium compounds Ellipsometry Rapid thermal annealing Urbach tail Multi-junction InAlAsSb Rapid Thermal Annealing
Content Type	Text
Resource Type	Article

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