Ultrasensitive photodetectors based on a high-quality LiInSe2 single crystal
2018
As an environmentally friendly and chemically robust crystal, LiInSe2 (LISe) exhibits promising optoelectronic properties. Here, an ultrasensitive metal–semiconductor–metal (MSM) structured photodetector based on a high-quality LISe crystal was systemically investigated. Remarkably, the LISe based photodetectors exhibit an outstanding photosensitivity with a high on/off current ratio (6.80 × 104), fast photoresponse (trise = 180 μs and tdecay = 200 μs), and high detectivity (2.16 × 1012 Jones). This work may lay the foundation and ignite future research interest on chalcogenide crystals in photodetectors.
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