Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 129, Issue 13, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2987707
Keywords
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Funding
- New Energy and Industrial Technology Development Organization (NEDO) of Japan [06A21201d]
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
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For this study, Cu-In-S nanocrystals were developed as a low toxic fluorescent. The stoichiometric CuInS2 nanocrystals were synthesized facilely by heating a solution of metal complexes and dodecanethiol. The fluorescence would be originated from the crystal defect. We intentionally introduced the crystal defect in nanocrystal with the prospect that the fluorescence intensity would be increased. The defect structure of products was analyzed using Raman spectroscopy and other techniques. The nanocrystals have many defects without phase separation as observed in the bulk material. Consequently, the fluorescence quantum yield achieved similar to 5%. Moreover, the fluorescence quantum yield was increased up to 15% by the ZnS coating. (C) 2008 American Institute of Physics.
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