320×256 HgCdTe IR FPA with a built-in shortwave cut-off filter |
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Authors: | VV Vasilyev VS Varavin SA Dvoretsky IV Marchishin NN Mikhailov AV Predein VG Remesnik IV Sabinina YuG Sidorov and AO Susliakov |
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Institution: | (1) Center for Research in Microelectronics, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi, 221005, India; |
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Abstract: | A photovoltaic detector design based on the graded band gap HgCdTe MBE structure with high conductivity layer (HCL) at interface,
which provides photodiodes series resistance and a shortwave cut.off filter is developed. The optimal HCL parameters giving
high quantum efficiency and minimal noise equivalent temperature difference were determined by calculations and experimentally
confirmed. The hybrid 320×256 IR FPA operating in 8–12 μm spectral range was fabricated. The threshold power responsivity
and minimal noise equivalent temperature difference values at wavelength maximum were 1.02×10−7 W/cm2, 4.1×108 V/W and 27 mK, respectively. |
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