Synthesis of few-layer GaSe nanosheets for high performance photodetectors.

  title={Synthesis of few-layer GaSe nanosheets for high performance photodetectors.},
  author={Ping-An Hu and Zhenzhong Wen and Lifeng Wang and Pingheng Tan and Kai Xiao},
  journal={ACS nano},
  volume={6 7},
Two-dimensional (2D) semiconductor nanomaterials hold great promises for future electronics and optics. In this paper, a 2D nanosheets of ultrathin GaSe has been prepared by using mechanical cleavage and solvent exfoliation method. Single- and few-layer GaSe nanosheets are exfoliated on an SiO(2)/Si substrate and characterized by atomic force microscopy and Raman spectroscopy. Ultrathin GaSe-based photodetector shows a fast response of 0.02 s, high responsivity of 2.8 AW(-1) and high external… CONTINUE READING
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