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

Jianping Shi; Mengxi Liu; Jinxiu Wen; Xibiao Ren; Xiebo Zhou; Qingqing Ji; Donglin Ma; Yu Zhang; Chuanhong Jin; Huanjun Chen; Shaozhi Deng; Ningsheng Xu; Zhongfan Liu; Yanfeng Zhang

doi:10.1002/adma.201503342

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

Adv Mater. 2015 Nov 25;27(44):7086-92. doi: 10.1002/adma.201503342. Epub 2015 Oct 7.

Authors

Jianping Shi^{1

2}, Mengxi Liu^{2

3}, Jinxiu Wen⁴, Xibiao Ren⁵, Xiebo Zhou^{1

2}, Qingqing Ji², Donglin Ma², Yu Zhang^{1

2}, Chuanhong Jin⁵, Huanjun Chen⁴, Shaozhi Deng⁴, Ningsheng Xu⁴, Zhongfan Liu², Yanfeng Zhang^{1

2}

Affiliations

¹ Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China.
² Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.
³ National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
⁴ State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Physics and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
⁵ State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China.

PMID: 26445312
DOI: 10.1002/adma.201503342

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.

Keywords: exciton binding energies; graphene heterostructures; intrinsic bandgaps; quasi-freestanding MoS2; scanning tunneling microscopy.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Chemistry Techniques, Synthetic
Disulfides / chemistry*
Gold / chemistry
Graphite / chemistry*
Models, Molecular
Molecular Conformation
Molybdenum / chemistry*
Temperature
Volatilization

Substances

Disulfides
Gold
Graphite
Molybdenum
molybdenum disulfide