期刊
ADVANCED MATERIALS
卷 28, 期 34, 页码 7472-7477出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201601833
关键词
2D materials; photoluminescence; rare-earth ions; substitution doping; up-conversion
类别
资金
- HKU/PolyU
- HKUST Collaborative Research Fund (CRF) [HKU9/CRF/13G]
- HKUST Collaborative Research Fund (PolyU) [E-RD50]
- PolyU Internal Grants [1-ZE14, 1-ZVGH]
A 2D system of Er-doped MoS2 layered nanosheets is developed. Structural studies indicate that the Er atoms can be substitutionally introduced into MoS2 to form stable doping. Density functional theory calculation implies that the system remains stable. Both NIR-to-NIR up-conversion and down-conversion light-emissions are observed in 2D transition metal dichalcogenides, ascribed to the energy transition from Er3+ dopants.
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