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- Title
Evaluation of photoluminescence quantum yield of monolayer WSe<sub>2</sub> using reference dye of 3-borylbithiophene derivative.
- Authors
Mohamed, Nur Baizura; Wang, Feijiu; Lim, Hong En; Zhang, Wenjin; Koirala, Sandhaya; Mouri, Shinichiro; Miyauchi, Yuhei; Matsuda, Kazunari
- Abstract
We studied an evaluation method of photoluminescence (PL) quantum yield of monolayer transition metal chalcogenides (TMDs) on a transparent substrate using a reference dye. A 3-borylbithiophene derivative (C58H49BN2S4) reference dye shows a high PL quantum yield of 36% even in the solid form and the high quantum yield is kept in a Poly(methyl methacrylate) (PMMA) matrix. Moreover, the photon energy of PL is similar to those of monolayer TMDs. These PL characteristics of the reference dye are useful for a evaluation of PL quantum yield in monolayer TMDs. The PL quantum yield of 0.18 ± 0.03% was evaluated for mechanically exfoliated monolayer WSe2 on glass substrate at room temperature.
- Subjects
PHOTOLUMINESCENCE; TRANSITION metal chalcogenides; THIOPHENE derivatives; CHEMICAL derivatives; METHYL methacrylate
- Publication
Physica Status Solidi (B), 2017, Vol 254, Issue 2, pn/a
- ISSN
0370-1972
- Publication type
Article
- DOI
10.1002/pssb.201600563