Ultrathin SnSe 2 Flakes Grown by Chemical Vapor Deposition for High‐Performance Photodetectors

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 × 103 A W−1, a high EQE of 2.61 × 105%, and superb detectivity of 1.01 × 1010 Jones, combined with fast rise and decay times of 14.5 and 8.1 ms, respectively. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than…

• NN
  National Natural Science Foundation of China
• MO
  Ministry of Science and Technology of the People's Republic of China
• HU
  Huazhong University of Science and Technology
• PF
  Program for New Century Excellent Talents in University