Preparation of Single-Layer MoS(2x)Se2(1-x) and Mo(x)W(1-x)S2 Nanosheets with High-Concentration Metallic 1T Phase

Chaoliang Tan; Wei Zhao; Apoorva Chaturvedi; Zhen Fei; Zhiyuan Zeng; Junze Chen; Ying Huang; Peter Ercius; Zhimin Luo; Xiaoying Qi; Bo Chen; Zhuangchai Lai; Bing Li; Xiao Zhang; Jian Yang; Yun Zong; Chuanhong Jin; Haimei Zheng; Christian Kloc; Hua Zhang

doi:10.1002/smll.201600014

Preparation of Single-Layer MoS(2x)Se2(1-x) and Mo(x)W(1-x)S2 Nanosheets with High-Concentration Metallic 1T Phase

Small. 2016 Apr 13;12(14):1866-74. doi: 10.1002/smll.201600014. Epub 2016 Feb 24.

Authors

Chaoliang Tan¹, Wei Zhao¹, Apoorva Chaturvedi¹, Zhen Fei², Zhiyuan Zeng³, Junze Chen¹, Ying Huang¹, Peter Ercius⁴, Zhimin Luo¹, Xiaoying Qi⁵, Bo Chen¹, Zhuangchai Lai¹, Bing Li⁶, Xiao Zhang¹, Jian Yang¹, Yun Zong⁶, Chuanhong Jin², Haimei Zheng³, Christian Kloc¹, Hua Zhang¹

Affiliations

¹ Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
² State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
³ Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
⁴ National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
⁵ Singapore Institute of Manufacturing Technology, 71 Nanyang Drive, Singapore, 638075, Singapore.
⁶ Institute of Materials Research and Engineering (IMRE), A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way, Innovis #08-03, Singapore, 138634, Singapore.

PMID: 26915628
DOI: 10.1002/smll.201600014

Abstract

The high-yield and scalable production of single-layer ternary transition metal dichalcogenide nanosheets with ≈66% of metallic 1T phase, including MoS(2x)Se2(1-x) and Mo(x)W(1-x)S2 is achieved via electrochemical Li-intercalation and the exfoliation method. Thin film MoS(2x)Se2(1- x) nanosheets drop-cast on a fluorine-doped tin oxide substrate are used as an efficient electrocatalyst on the counter electrode for the tri-iodide reduction in a dye-sensitized solar cell.

Keywords: dye-sensitized solar cells; electrocatalysts; electrode materials; metallic 1T phase; nanosheets.

Publication types

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