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Two-dimensional semiconductor alloys: Monolayer Mo1-xWxSe2
- Authors
- Tongay, S (Tongay, Sefaattin); Narang, DS (Narang, Deepa S.); Kang, J (Kang, Jun); Fan, W (Fan, Wen); Ko, CH (Ko, Changhyun); Luce, AV (Luce, Alexander V.); Wang, KX (Wang, Kevin X.); Suh, J (Suh, Joonki); Patel, KD (Patel, K. D.); Pathak, VM (Pathak, V. M.); Li, JB (Li, Jingbo); Wu, JQ (Wu, Junqiao)...More...
- Issue Date
- Jan-2014
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.104, no.1
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 104
- Number
- 1
- ISSN
- 0003-6951
1077-3118
- Abstract
- Monolayer Mo1-xWxSe2 (x = 0, 0.14, 0.75, and 1) alloys were experimentally realized from synthesized crystals. Mo1-xWxSe2 monolayers are direct bandgap semiconductors displaying high luminescence and are stable in ambient. The bandgap values can be tuned by varying the W composition. Interestingly, the bandgap values do not scale linearly with composition. Such non-linearity is attributed to localization of conduction band minimum states around Mo d orbitals, whereas the valence band maximum states are uniformly distributed among W and Mo d orbitals. Results introduce monolayer Mo1-xWxSe2 alloys with different gap values, and open a venue for broadening the materials library and applications of two-dimensional semiconductors. (C) 2014 AIP Publishing LLC.
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Related Researcher
- Ko, Chang Hyun
- 첨단소재·전자융합공학부 (신소재물리전공)