高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (4): 704.

• 研究论文 • 上一篇    下一篇

ZnxCd1-xS∶Ag纳米晶的合成及其光学性质研究

戴洁, 菅文平, 庄家骐, 杨文胜   

  1. 吉林大学化学学院, 长春 130023
  • 收稿日期:2005-04-19 出版日期:2006-04-10 发布日期:2006-04-10
  • 通讯作者: 庄家骐(1978年出生), 男, 讲师, 主要从事纳米材料合成研究. E-mail: zhuangjiaqi@126.com

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

摘要:

以巯基丙酸(MPA)为稳定剂, 利用共沉淀法制备了水溶性的Ag掺杂的ZnxCd1-xS合金型纳米晶. Ag掺杂后ZnxCd1-xS纳米晶产生新的发射峰, 并且发光效率得到了有效提高. 通过改变纳米粒子中Zn/Cd比例可有效地调控ZnxCd1-xS∶Ag纳米晶的吸收带隙宽度, 同时可以在425~603 nm之间实现对ZnxCd1-xS∶Ag纳米晶发射峰位的连续调控.

关键词: 纳米晶; 掺杂型半导体; 合金型半导体; 发光

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

中图分类号: 

TrendMD: