Journal Published Online: 03 September 2013
Volume 41, Issue 6

Concentration Effect on Photoluminescence Tests of the CdSe Colloid Nanocrystal System

CODEN: JTEVAB

Abstract

In this study, monodispersed CdSe nanocrystal (NCs) were prepared by means of solution-phase synthesis. CdSe/CdS NCs were synthesized via successive ion layer adsorption and reaction on CdSe core NCs. The optical properties of CdSe and CdSe/CdS core/shell NCs dissolved in different solvents were investigated. We discuss here the photoluminescence properties of an NC system that are affected by the NC concentration and the solvent variety, including photoluminescence intensity variation and photoluminescence peak shift. The change in emission intensity is due to the influence of the solvent polarity and the NC concentration quenching effect. The phenomenon of a large blue shift of photoluminescence peaks with NC concentration is caused by interactions among the NCs.

Author Information

Lin, Zhonghai
Key Laboratory of Intelligent Information Processing in Universities of Shandong, Shandong Institute of Business and Technology, Yantai, 264005, CN International Center for Dielectric Research, Xi’an Jiaotong Univ., Xi’an, CN
Zhu, Zhilin
Key Laboratory of Intelligent Information Processing in Universities of Shandong, Shandong Institute of Business and Technology, Yantai, CN
Wang, Minqiang
International Center for Dielectric Research, Xi’an Jiaotong Univ., Xi’an, CN
Wei, Guangfen
Key Laboratory of Intelligent Information Processing in Universities of Shandong, Shandong Institute of Business and Technology, Yantai, CN
Du, Huiqiu
Key Laboratory of Intelligent Information Processing in Universities of Shandong, Shandong Institute of Business and Technology, Yantai, CN
Wang, Pinjian
Key Laboratory of Intelligent Information Processing in Universities of Shandong, Shandong Institute of Business and Technology, Yantai, CN
Liu, Yanwu
Key Laboratory of Intelligent Information Processing in Universities of Shandong, Shandong Institute of Business and Technology, Yantai, CN
Yang, Zhi
International Center for Dielectric Research, Xi’an Jiaotong Univ., Xi’an, CN
Pages: 4
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Stock #: JTE20120326
ISSN: 0090-3973
DOI: 10.1520/JTE20120326