Jump to Main Content
- Su, Weitao, et al. Show all 7 Authors
- Chemical communications 2018 v.54 no.7 pp. 743-746
- chemical compounds; chemical reactions; energy; nutrient deficiencies; photoluminescence
- ... A nonstoichiometric process by modulating the W/Se atomic ratio was employed to tune the excitonic PL band of monolayer WSe₂ from 810 nm to 690 nm. DFT calculations indicate that Se-rich conditions reduce the band gap, while Se-deficient conditions facilitate the increasing band gap and decreasing excitionic binding energy, which finally induces such broadband tuning of the PL band. ...