Pressure-induced enhancement and retainability of optoelectronic properties of NiPS3

Sixue Fang, Quanjun Li, Zonglun Li, Qing Dong, Xiaoling Jing, Chenyi Li, Haiyan Li, Bo Liu, Ran Liu & Bingbing Liu
Here, we report significant pressure-modulate optoelectronic properties of NiPS3. Upon compression, NiPS3 exhibited a photocurrent increase of five orders of magnitude over the initial value. Interestingly, when NiPS3 was finally decompressed to ambient conditions, the photocurrent could maintain a two-order-of-magnitude enhancement. In addition, the spectral response range was extended to the near-infrared spectral range (up to 1650 nm) under high pressure. Raman and XRD measurements and theoretical calculations revealed significant enhancement in both interlayer and...
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