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Tunable Photoluminescence of CdTe Nanocrystals over Wide Spectral Range via Microwave-assisted Surface Modiˉcation
Bin Liu,Jun Li,Jing-hong Li*
Author NameAffiliationE-mail
Bin Liu Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China  
Jun Li Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China  
Jing-hong Li* Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China jhli@mail.tsinghua.edu.cn 
Abstract:
An easy and fast microwave-assisted method of tuning the photoluminescence properties of CdTe nanocrystals in aqueous phase is presented. The photoluminescence could be tuned covering almost the whole visual spectral range (537-680 nm), and even partially extending to the near-infrared spectral range. The e?ect is probably related to the formation of core/shell structure and complex nano-assemblies. These results provide a promising means of tuning the photoluminescence of CdTe nanocrystals, leading to potential applications in biomedical labeling, solar cells, lasers, and other ˉelds.
Key words:  Microwave-assisted synthesis, CdTe, Nanocrystal, Photoluminescence
FundProject:
微波辅助表面修饰:大范围可控调节CdTe纳米粒子发光光谱
刘斌,李军,李景虹*
摘要:
利用微波辅助合成方法简单快捷地调节水溶液中CdTe纳米晶的发光性质,使其发光光谱可以覆盖整个可见光区,甚至部分扩展到近红外(537~680 nm).这种光谱调控的原因可能是由于CdTe纳米晶表面形成了核壳结构以及纳米粒子之间形成复杂的纳米组合体.
关键词:  微波合成,CdTe,纳米晶,荧光
DOI:10.1088/1674-0068/20/04/495-499
分类号: