Comparison of Pre-and Post-Irradiation Low-Frequency Noise Spectra of Midwave Infrared nBn Detectors With Superlattice Absorbers
| Autor: | Eli A. Garduno, Vincent M. Cowan, Christian P. Morath, Elizabeth H. Steenbergen, Geoffrey D. Jenkins |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics Nuclear and High Energy Physics Infrared business.industry Superlattice Infrasound Shot noise 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Fluence Optics Nuclear Energy and Engineering 0103 physical sciences Irradiation Electrical and Electronic Engineering Atomic physics 0210 nano-technology business Noise (radio) Dark current |
| Zdroj: | IEEE Transactions on Nuclear Science. 64:1042-1047 |
| ISSN: | 1558-1578 0018-9499 |
| DOI: | 10.1109/tns.2017.2679019 |
| Popis: | Noise spectra of type-II strained layer superlattice midwave infrared photodetectors were compared pre- and post-irradiation by a proton fluence of $\mathrm {7.5\times 10^{11}~ cm^{-2}}$ [total ionizing dose equivalent of 100 krad (Si)] and related to the shot noise limit at biases ranging from +200 to −800 mV and temperatures of 130 and 160 K. Pre-irradiation dark current at 130 K was 7.5X Rule ’07 and increased to 59X Rule ’07 after irradiation. The pre-irradiation noise spectra were within one order of magnitude of the shot noise prediction, while post-irradiation noise spectra were close to two orders higher, indicating the introduction of nonshot-like noise sources. |
| Databáze: | OpenAIRE |
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