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- W4320080467 abstract "Development of broadband photodetectors for cryogenic and elevated temperature applications has been a major concern in space science and other radiation detection technologies. With this objective TiS2-nanostructures were investigated for photodetection characteristics in the temperature range of −180 °C to 150 °C. The device was developed by depositing TiS2-nanostructures amid gold-interdigitated electrodes by drop-casting technique. The photodetection performance was investigated for 617 nm and 850 nm LEDs as a function of power density and operating temperature. It is found that as-developed photodetector can operate in the solar spectrum from 375 nm to 1050 nm. The designed photodetector is capable of detecting photons at −180 °C temperature and 0.015 mW/cm2 incident light power density with an ultra-low bias voltage (0.1 V). The operational temperature range can be further extended by optimizing the bias voltage. The device has excellent photodetection capabilities for from sub-zero temperature to elevated temperatures. The highest photocurrent of 45.22 nA is obtained at 617 nm and 0.1 V bias voltage, when the temperature is 0 °C and power density is 0.792 mW/cm2, while the highest values for photoresponsivity (8.9 × 104 A/W), quantum efficiency (1.78 × 105 A/W nm), and detectivity (1.93 × 1014 Jones) are found for 0.015 mW/cm2 power density. Optimization of the Bias-voltage optimization further improves the device performance. At −120 °C operating temperature, the fastest response (response/recovery time∼0.099 s) and highest device ON/OFF ratio of the ‘as-developed’ photodetector are recorded." @default.
- W4320080467 created "2023-02-12" @default.
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- W4320080467 date "2023-05-01" @default.
- W4320080467 modified "2023-10-14" @default.
- W4320080467 title "Development of high-performance broadband optical detector for cryogenic to elevated operating temperature" @default.
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- W4320080467 doi "https://doi.org/10.1016/j.mssp.2023.107364" @default.
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