| Autor: |
Zhen Hua Ye, Xiang Yan Xu, Wei Lu |
| Rok vydání: |
2007 |
| Předmět: |
|
| Zdroj: |
2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics. |
| DOI: |
10.1109/icimw.2007.4516710 |
| Popis: |
The performance of two-color middle wavelength photovoltaic Hg1-xCdxTe detector is studied numerically for optimizing design. Simultaneous mode is designed for the two-color detector. The effect of SRH recombination electron lifetime in p-region on spectral response is examined, and the dependence of crosstalk on composition gradient of barrier layer is analyzed. Simulation results show that quantum efficiency decreases rapidly with decrease of SRH electron lifetime in p-region, at least about 10ns of SRH electron lifetime is required for better performance of the detector. Crosstalk decreases to the steady value determined by optical crosstalk as the composition gradient of barrier layer increases to about 0.03, so critical composition gradient of about 0.03 is necessary for suppressing the electrical crosstalk. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
