Structural and optical characterization of MoS2 quantum dots defined by thermal annealing
- Title
- Structural and optical characterization of MoS2 quantum dots defined by thermal annealing
- Author
- 김은규
- Keywords
- MoS2; Quantum Dot; CVD; Thermal annealing
- Issue Date
- 2017-03
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF LUMINESCENCE, v. 183, page. 62-67
- Abstract
- We report a new approach to the synthesis of molybdenum disulfide (MoS2) quantum dots (QDs) that uses a single layer MoS2 grown by chemical vapor deposition (CVD) method as a precursor. The MoS2 QDs were formed by a thermal annealing process at 500 degrees C for 70 h to reduce the particle size. The results indicated that CVD-MoS2 covered almost area of the substrate, which showed a typical single layer thickness and 2H-MoS2 structure. A blue shift from 682 nm to 548 nm wavelength was observed in the photoluminescence (PL) spectra. It shows a successful formation of QDs with 47 nm small size from the large sized layers. This process is relatively easy for defining MoS2 QDs with a density of 10(11) cm(-2) and shows potential advantages for the fabrication of a wide range of electrical optical devices using QDs. (C) 2016 Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0022231316310584?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/113399
- ISSN
- 0022-2313; 1872-7883
- DOI
- 10.1016/j.jlumin.2016.11.014
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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