Band gap-tunable molybdenum sulfide selenide monolayer alloy

Sheng Han Su, Yu Te Hsu, Yung Huang Chang, Ming-Hui Chiu, Chang Lung Hsu, Wei Ting Hsu, Wen Hao Chang, Jr-Hau He*, Lain-Jong Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

92 Scopus citations


The optical energy gap of as-grown MoS2 flakes from chemical vapor deposition can be modulated from 1.86 eV (667 nm) to 1.57 eV (790 nm) by a vapor phase selenization process. This approach, replacing one chalcogen by another in the gas phase, is promising in modulating the optical and electronic properties of other transition metal dichalcogenide monolayers.

Original languageEnglish (US)
Pages (from-to)2589-2594
Number of pages6
Issue number13
StatePublished - Jan 1 2014


  • MoS2
  • band gap tuning
  • layered materials
  • transition metal dichalcogenides
  • two-dimensional materials

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Engineering (miscellaneous)


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