| 水溶胶CdSe/CdS核/壳结构纳米晶制备及光学性质的研究 |
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| 引用本文： | 滕枫,唐爱伟,高银浩,梁春军,徐征,王永生.水溶胶CdSe/CdS核/壳结构纳米晶制备及光学性质的研究[J].光谱学与光谱分析,2005,25(5):651-654. |
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| 作者姓名： | 滕枫 唐爱伟 高银浩 梁春军 徐征 王永生 |
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| 作者单位： | 北京交通大学光电子技术研究所，信息存储、显示与材料部级开放实验室，北京 100044 |
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| 基金项目： | 国家重点基础研究发展计划(“973”计划)(2003CB314707)，国家自然科学基金(NSFC):(90301004,10434030,60406005)，北京市科技新星计划(2004B10)资助项目 |
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| 摘 要： | 以巯基乙酸为稳定剂在水溶液中合成了水溶胶CdSe/CdS核/壳结构的量子点，利用X射线粉末衍射(XRD)和X射线光电子能谱(XPS)对量子点结构进行了表征;并对化学组成和尺寸分布进行了研究。通过紫外-可见吸收光谱、激发光谱与发射光谱研究了它们的发光特性。
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| 关 键 词： | Ⅱ-Ⅵ族半导体 量子点 水溶胶 |
| 文章编号： | 1000-0593(2005)05-0651-04 |
| 收稿时间： | 2004-12-29 |
| 修稿时间： | 2004年12月29 |
Study of Water-Sol Core-Shell CdSe/CdS Quantum Dots |
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| TENG Feng,TANG Ai-wei,GAO Yin-hao,LIANG Chun-jun,XU Zheng,WANG Yong-sheng.Study of Water-Sol Core-Shell CdSe/CdS Quantum Dots[J].Spectroscopy and Spectral Analysis,2005,25(5):651-654. |
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| Authors: | TENG Feng TANG Ai-wei GAO Yin-hao LIANG Chun-jun XU Zheng WANG Yong-sheng |
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| Institution: | Institute of Optoelectronic Technology and Laboratory of Information Storage, Display and Materials, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | Water-sol core/shell CdSe/CdS quantum dots (QDs) were synthesized in aqueous solution by using mercapto-acetate acid as stabilizer. The UV-Vis absorption and emission spectra were studied. The size of the SdSe-core was about 2 nm estimated by (absorption) edge and X-ray powder diffraction(XRD). The structure was also characterized by X-ray photoelectron spectroscopy(XPS). The intensity of luminescence of the quantum dots was greatly enhanced after the surface was modified with CdS shell. Red shift of the peak was shown in both the emission and absorption spectra. |
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| Keywords: | Ⅱ-Ⅵ semiconductor Quantum dots Water-sol |
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