Surfactant-dependent photoluminescence of CdTe nanocrystals in aqueous solution

被引:95
作者
Li, CL [1 ]
Murase, N [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Photon Res Inst, Ikeda, Osaka 5638577, Japan
关键词
D O I
10.1246/cl.2005.92
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Photoluminescence (PL) efficiency of CdTe nanocrystals was investigated as a function of the ratio of surfactant (thioglycolic acid, TGA) to Cd2+ used in aqueous preparation. When the ratio was 1.3, a maximum PL efficiency of 65% was obtained. Within our knowledge, this value is the highest ever reported for as-prepared aqueous solution. Surfactants added more than the optimal amount tend to gather densely on the nanocrystals, and distort the surface. This might be one explanation of the decrease of efficiency.
引用
收藏
页码:92 / 93
页数:2
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