Ultrathin SnSe2 Flakes Grown by Chemical Vapor Deposition for High-Performance Photodetectors.

Zhou, Xing; Gan, Lin; Tian, Wenming; Zhang, Qi; Jin, Shengye; Li, Huiqiao; Bando, Yoshio; Golberg, Dmitri et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

High-quality ultrathin single-crystalline SnSe2 flakes are synthesized under atmospheric-pressure chemical vapor deposition for the first time. A high-performance photodetector based on the individual SnSe2 flake demonstrates a high photoresponsivity of 1.1 × 10(3) A W(-1), a high EQE of 2.61 × 10(5)%, and superb detectivity of 1.01 × 10(10) Jones, combined with fast rise and decay times of 14.5 and 8.1 ms, respectively.