水溶性CdHgTe合金量子点的制备与表征

doi:10.3724/SP.J.1077.2011.00735

无机材料学报 ›› 2011, Vol. 26 ›› Issue (7): 735-738.DOI: 10.3724/SP.J.1077.2011.00735

水溶性CdHgTe合金量子点的制备与表征

王益林, 童张法, 陆建平, 黎建辉, 周立亚

(广西大学化学化工学院, 南宁 530004)

收稿日期:2010-09-29 修回日期:2011-01-12 出版日期:2011-07-20 网络出版日期:2011-06-20
作者简介:王益林(1968-), 男, 博士研究生. E-mail: ylinwang2002@yahoo.com.cn
基金资助:
国家自然科学基金(61066006); 广西大学科研基金(XBZ110359)

Synthesis and Characterization of Water-soluble CdHgTe Alloyed Quantum Dots

WANG Yi-Lin, TONG Zhang-Fa, LU Jian-Ping, LI Jian-Hui, ZHOU Li-Ya

(School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China)

Received:2010-09-29 Revised:2011-01-12 Published:2011-07-20 Online:2011-06-20
Supported by:
National Natural Science Foundation of China (61066006); Scientific Research Foundation of Guangxi University (XBZ110359)

摘要/Abstract

摘要： 以巯基乙酸为稳定剂, 在水溶液中加热CdCl₂、HgCl₂和 NaHTe的混合物直接合成CdHgTe合金量子点. 分别用荧光光谱、红外光谱、X射线衍射及透射电镜对其光谱性能、表面基团和结构形貌进行了表征. 结果表明, 合金量子点的发射波长在536到688 nm范围内连续可调, 掺杂后量子点的发射光谱变宽, 半高峰宽为70~90 nm; CdHgTe的荧光量子产率介于1.5%到6.7%之间; 巯基与CdHgTe量子点表面的Cd²⁺离子发生键合, 而使巯基乙酸结合于量子点表面; 合金量子点具有闪锌矿结构; 量子点分散性好, 形貌呈颗粒状.

关键词: 量子点, 荧光, 制备, 表征

Abstract: CdHgTe alloyed quantum dots (QDs) were directly synthesized in aqueous solution by heating a mixture of CdCl₂, HgCl₂and NaHTe in the presence of thioglycolic acid as stabilizer. The obtained QDs were characterized by fluorescent spectroscope, fourier transform infrared spectroscope (FTIR), X-ray powder diffraction (XRD) and transmission electron microscope (TEM), respectively. The results show that the technique lead to the formation of CdHgTe alloyed QDs with broad fluorescence full-width at half-maximum (70-90 nm), moderate photoluminescence quantum yield (1.5%-6.7%), and a broad emission spectra tunable from 536 nm to 688 nm. The water-soluble alloyed QDs with thioglycolic acid modification for CdHgTe are of zinc-blended crystal structure in a sphere-like shape.

Key words: quantum dots, luminescence, synthesis, characterization

中图分类号:

O657

王益林, 童张法, 陆建平, 黎建辉, 周立亚. 水溶性CdHgTe合金量子点的制备与表征[J]. 无机材料学报, 2011, 26(7): 735-738.

WANG Yi-Lin, TONG Zhang-Fa, LU Jian-Ping, LI Jian-Hui, ZHOU Li-Ya. Synthesis and Characterization of Water-soluble CdHgTe Alloyed Quantum Dots[J]. Journal of Inorganic Materials, 2011, 26(7): 735-738.

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水溶性CdHgTe合金量子点的制备与表征

Synthesis and Characterization of Water-soluble CdHgTe Alloyed Quantum Dots

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