Chemical Vapor Deposition of Two-Dimensional PbS Nanoplates for Photodetection  

作　　者：Yi-Yi Gu Yi-Fan Wang ling Xia Xiang-Min Meng 顾奕奕;王一凡;夏静;孟祥敏(Key Laboratory of Photochemical Conversion and Optoelectronic Materials,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049)

机构地区：[1]Key Laboratory of Photochemical Conversion and Optoelectronic Materials,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190 [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049

出　　处：《Chinese Physics Letters》2020年第4期135-139,共5页中国物理快报（英文版）

基　　金：Supported by the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDA09040203);the National Natural Science Foundation of China(Grant No.11704389).

摘　　要：Non-layered two-dimensional(2D)lead sulfide(PbS)has attracted growing interest recently due to its direct narrow bandgap(0.4 eV)and broad spectral detection from visible to mid-IR region,which lead to remarkable electronic and optoelectronic properties promising for real applications.We report the chemical vapor deposition growth of highly crystalline 2D PbS crystals on mica substrates.The high quality and uniformity of 2D PbS nanoplates are confirmed by atomic force microscopy,x-ray powder diffraction,transmission electron microscopy and x-ray photoelectron spectroscopy.The morphology and lateral size are controllable by different growth temperatures.Photodetectors made from 2D PbS nanoplates reveal good stability,high photoresponsivity,and fast response time,which indicates their promising applications for ultrathin optoelectronics.

关 键 词：spectroscopy. PLATES CRYSTALLINE 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TN15[电子电信—物理电子学]