All Chemical Vapor Deposition Synthesis and Intrinsic Bandgap Observation of MoS2 /Graphene Heterostructures.

Shi, Jianping; Liu, Mengxi; Wen, Jinxiu; Ren, Xibiao; Zhou, Xiebo; Ji, Qingqing; Ma, Donglin; Zhang, Yu et al. · Adv Mater · 2015

basic_science · Level V

Where this comes from

Abstract

A facile all-chemical vapor deposition approach is designed, which allows both sequentially grown Gr and monolayer MoS2 in the same growth process, thus allowing the direct construction of MoS2 /Gr vertical heterostructures on Au foils. A weak n-doping effect and an intrinsic bandgap of MoS2 are obtained from MoS2 /Gr/Au via scanning tunneling microscopy and spectroscopy characterization. The exciton binding energy is accurately deduced by combining photoluminescence measurements.

Medical subject headings