期刊
APPLIED SURFACE SCIENCE
卷 311, 期 -, 页码 490-497出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.05.095
关键词
Carbon quantum dots; Solid films; Tunable emission
类别
资金
- National Basic Research Programs of China [2011CB922102, 2013CB932901]
- National Natural Science Foundation of China [11374141, 21203098]
- Science and Technology Foundation of Guizhou Province, China [J[2013]2277]
- Hong Kong Research Grants Council (RGC) General Research Fund (GRF) [CityU 112212]
Although carbon quantum dots (CQDs) possess excellent luminescence properties, it is a challenge to apply water-soluble CQDs to tunable luminescent devices. Herein, quaternary CQDs are incorporated into poly(ethylene glycol) to produce poly(ethylene glycol)/CQD composite solid films which exhibit strong and tunable blue-red emission. The fluorescent quantum yield reaches 12.6% which is comparable to that of many liquid CQDs and the photoluminescence characteristics are determined to elucidate the fluorescence mechanism. The CQD solid films with tunable optical properties bode well for photoelectric devices especially displays. (C) 2014 Elsevier B.V. All rights reserved.
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