title: Synthesis and enhanced electrochemical catalytic performance of monolayer WS2(1-x) Se2x with a tunable band gap.
abstract: The first realization of a tunable band-gap in monolayer WS2(1-x) Se2x is demonstrated. The tuning of the bandgap exhibits a strong dependence of S and Se content, as proven by PL spectroscopy. Because of its remarkable electronic structure, monolayer WS2(1-x) Se2x exhibits novel electrochemical catalytic activity and offers long-term electrocatalytic stability for the hydrogen evolution reaction.
authors.affiliation: Department of Materials Science & Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Fu
authors.affiliation: Department of Materials Science & Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Yang
authors.affiliation: Department of Materials Science & Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China.
authors.forename: Wenhui
authors.initials: W
authors.lastname: Wang
authors.affiliation: Department of Materials Science & Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China.
authors.forename: Ali
authors.initials: A
authors.lastname: Han
authors.affiliation: Department of Materials Science & Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Huang
authors.affiliation: Department of Materials Science & Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China.
authors.forename: Pingwu
authors.initials: P
authors.lastname: Du
authors.affiliation: Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology, Hong Kong SAR, 8523, China.
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Fan
authors.affiliation: Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, CA, 94720, USA.
authors.forename: Jingyu
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Materials Science & Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China.|Synergetic Innovation Center of Quantum, Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Xiang
keywords: WS2(1-x)Se2x; catalytic activity; hydrogen evolution reactions; photoluminescence; tunable band gap