期刊
JOURNAL OF LUMINESCENCE
卷 132, 期 2, 页码 313-317出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2011.08.030
关键词
CuInS2; Nanocrystal; Colloidal synthesis; Luminescence; Energy transfer
类别
资金
- National Natural Science Foundation of China [61176117]
- Fundamental Research Funds for the Central Universities of China [2010QNA4001]
- 863 Program [2011AA050517]
Luminescent CuInS2 nanocrystals have been synthesized in dodecanethiol using air-stable precursors. The nanocrystals were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy. The optical properties of the CuInS2 nanocrystals can be controlled by changing the reaction conditions, such as reaction time, temperature, and addition of ligands. It was found that the steady-state photoluminescence spectrum of the close-packed CuInS2 nanocrystals on glass substrate peaked at longer wavelength than that of the colloidal ones and the close-packed nanocrystals possessed a shorter luminescence decay time. This behavior was explained on the basis of Forster resonant energy transfer due to the shorter distance between nanocrystals on substrate. (C) 2011 Elsevier B.V. All rights reserved.
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