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Recent results on metalorganic vapor phase epitaxially grown HgCdTe heterostructure devices
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Elliott, C. T., Gordon, N. T., Hall, Ralph, Phillips, T. J., White, A. M., Jones, C. L., Maxey, C. D. and Metcalfe, N. E. (1996) Recent results on metalorganic vapor phase epitaxially grown HgCdTe heterostructure devices. Journal of Electronic Materials, 25 (8). pp. 1139-1145. doi:10.1007/BF02654999 ISSN 0361-5235.
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Official URL: http://dx.doi.org/10.1007/BF02654999
Abstract
The ability to grow complex multilayer structures in Hg1-xCdxTe by epitaxial techniques has made it possible to produce a range of new devices such as infrared LEDs, lasers, and two-color infrared detector arrays. The devices described here, however, are designed to operate at temperatures above 145K and include both infrared sources and detectors. Three layer ppn structures, where the underlined symbols mean wider gap, have close to Auger limited RoAs at temperatures above 145K. Under reverse bias, the devices exhibit Auger suppression leading to useful detectivities at room temperature. The diodes exhibit forward biased electroluminescence at room temperature although the efficiency of this emission is found to fall rapidly as the peak wavelength is increased toward 9 μm due to increased Auger recombination rates. By reverse biasing them, however, the devices show negative luminescence as a result of reducing the electron and hole densities below their thermal equilibrium value. The diode emitters have a higher quantum efficiency when used in this mode due to Auger suppression of the dark current.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Journal of Electronic Materials | ||||
Publisher: | Springer | ||||
ISSN: | 0361-5235 | ||||
Official Date: | August 1996 | ||||
Dates: |
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Volume: | 25 | ||||
Number: | 8 | ||||
Page Range: | pp. 1139-1145 | ||||
DOI: | 10.1007/BF02654999 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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