Highly purified carbon nanotube cascading IR detectors are constructed, in which virtual contacts are used to multiply photovoltage and improve the signal-to-noise ratio. It exhibits a broadband response, high room temperature detectivity of 2.91 × 1011 Jones, extremely good temperature and temporal stability and large scale fabrication potential of 150 × 150 photodetector array with random test yield of 100%.
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Liu et al. (2015) studied this question.
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