| 颜色可调的高荧光CdTe量子点的水相合成 |
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| 引用本文： | 王益林,黄武,王荣芳,周立亚. 颜色可调的高荧光CdTe量子点的水相合成[J]. 高等学校化学学报, 2011, 32(12): 2727-2732 |
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| 作者姓名： | 王益林 黄武 王荣芳 周立亚 |
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| 作者单位： | 广西大学化学化工学院,南宁,530004 |
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| 基金项目： | 国家自然科学基金，广西大学科研基金 |
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| 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=1...
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| 关 键 词： | 碲化镉 量子点 荧光 |
| 收稿时间： | 2011-04-22 |
Synthesis of Highly Emissive, Color-tunable CdTe Quantum Dots in Aqueous Solution |
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| WANG Yi-Lin,HUANG Wu,WANG Rong-Fang,ZHOU Li-Ya. Synthesis of Highly Emissive, Color-tunable CdTe Quantum Dots in Aqueous Solution[J]. Chemical Research In Chinese Universities, 2011, 32(12): 2727-2732 |
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| Authors: | WANG Yi-Lin HUANG Wu WANG Rong-Fang ZHOU Li-Ya |
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| Affiliation: | School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China |
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| 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. |
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| Keywords: | Cadmium telluride Quantum dot Photoluminescence |
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