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MCT infrafed detectors with close to radiatively limited performance at 240 K in the 3–5 µm band
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Gordon, N. T., Hall, Ralph, Jones, C. L., Maxey, C. D., Metcalfe, N. E., Catchpole, R. A. and White, A. M. (2000) MCT infrafed detectors with close to radiatively limited performance at 240 K in the 3–5 µm band. Journal of Electronic Materials, 29 (6). pp. 818-822. doi:10.1007/s11664-000-0230-1
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Official URL: http://dx.doi.org/10.1007/s11664-000-0230-1
Abstract
Results are reported on infrared photodiodes which have been designed to minimize the dark diffusion currents for operating temperatures above 200 K in the MWIR (3–5 µm) waveband. It is shown that by adjusting the doping and composition profiles, the dark currents due to Auger and contact diffusion mechanisms can be controlled leading to devices which are close to being radiatively limited. The radiatively-generated current has been calculated as a function of temperature from the measured spectral response and this indicates that the radiative contribution increases from about 53% at 240 K to 65% at 300K. In addition, it is shown that these internally-generated radiative currents can be reduced using negative luminescence. This result is the first experimental verification that the internally-generated radiative mechanism can contribute to the diffusion current.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science > Physics | ||||||
| Journal or Publication Title: | Journal of Electronic Materials | ||||||
| Publisher: | Springer | ||||||
| ISSN: | 0361-5235 | ||||||
| Official Date: | June 2000 | ||||||
| Dates: |
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| Volume: | 29 | ||||||
| Number: | 6 | ||||||
| Page Range: | pp. 818-822 | ||||||
| DOI: | 10.1007/s11664-000-0230-1 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access |
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