高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (12): 2727.

• 研究论文 • 上一篇    下一篇

颜色可调的高荧光CdTe量子点的水相合成

王益林,  黄武,  王荣芳,  周立亚   

  1. 广西大学化学化工学院,  南宁 530004
  • 收稿日期:2011-04-22 修回日期:2011-08-01 出版日期:2011-12-10 发布日期:2011-11-25
  • 通讯作者: 王益林 E-mail:ylinwang2002@yahoo.com.cn
  • 基金资助:

    国家自然科学基金(批准号: 61066006)和广西大学科研基金(批准号: XBZ110359)资助.

Synthesis of Highly Emissive, Color\|tunable CdTe Quantum Dots in Aqueous Solution

WANG Yi-Lin*, HUANG Wu, WANG Rong-Fang, ZHOU Li-Ya   

  1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
  • Received:2011-04-22 Revised:2011-08-01 Online:2011-12-10 Published:2011-11-25
  • Contact: WANG Yi-Lin E-mail:ylinwang2002@yahoo.com.cn
  • Supported by:

    国家自然科学基金(批准号: 61066006)和广西大学科研基金(批准号: XBZ110359)资助.

摘要: 以亚碲酸钠为碲源,  硼氢化钠为还原剂,  一步合成了巯基丁二酸(MSA)稳定的CdTe量子点. 研究了反应液pH值、镉与碲的摩尔比及镉与巯基丁二酸的摩尔比等实验条件对CdTe量子点体系荧光量子产率的影响,  并用荧光光谱、X射线粉末衍射及透射电子显微镜等对其进行了表征. 结果表明,  CdTe量子点具有闪锌矿结构,  形貌呈球状;  在pH=10.5, n(Cd2+):n(Te2-):n(MSA)=1:0.05:1.4的条件下,  制备的各种发光颜色的量子点都具有较高的荧光量子产率,  最高值可达73.3%.

关键词: 碲化镉,  , 量子点,  , 荧光

Abstract: A novel technology was developed for the synthesis of mercaptosuccinic acid(MSA)-capped CdTe quantum dots(QDs) when sodium tellurite worked as a tellurium source and sodium borohydride acted as a reductant.  The influences of various experimental variables, including pH value, Cd/Te and Cd/MSA molar ratios, on the photoluminescence(PL) quantum yield(QY) of the prepared CdTe QDs were systematically investigated.  The obtained QDs were characterized by photoluminescence spectroscopy, X-ray powder diffraction(XRD) and transmission electron microscopy(TEM). The results show  that the CdTe QDs are of zinc-blended crystal structure in a sphere-like shape; various luminescent CdTe QDs with high emission efficiency(maximum quantum yield of 73.3%) can be prepared at pH=10.5 and n(Cd2+):n(Te2-):n(MSA)=1:0.05:1.4.

Key words: Cadmium telluride, Quantum dot; , Photoluminescence

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