Chem. J. Chinese Universities ›› 2006, Vol. 27 ›› Issue (4): 704.

• Articles • Previous Articles     Next Articles

Synthesis and Optical Properties of ZnxCd1-xS∶Ag Nanocrystals

DAI Jie, JIAN Wen-Ping, ZHUANG Jia-Qi*, YANG Wen-Sheng   

  1. College of Chemistry, Jilin University, Jilin 130023, China
  • Received:2005-04-19 Online:2006-04-10 Published:2006-04-10
  • Contact: ZHUANG Jia-Qi,E-mail: zhuangjiaqi@126.com

Abstract:

Water-soluble Ag doped  ZnxCd1-x  nanocrystals were synthesized by using MPA (3-mercaptopropionic acid) as stabilizer. XRD and UV-VIS spectra were used to confirm the formation of the alloyed structure. After Ag doping, a new luminescent peak was observed and the luminescent efficiency of the nanocrystals was improved greatly. Fluorescent spectra investigation showed that the increasing of the content of Cd lowered the conduction band of the doped nanocrystal. The alloyed nanocrystals show composition-tunable optical band gap energy and their emission can be tuned continuously in the range of 425 to 603 nm.

Key words: Nanocrystal;  Doped Semiconductor;  Alloy Semiconductor;  Photoluminescence

CLC Number: 

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