| SiO2干凝胶中CdS量子点的光致发光性质 |
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| 引用本文： | 徐磊华,强颖怀,江利. SiO2干凝胶中CdS量子点的光致发光性质[J]. 发光学报, 2011, 32(3): 227-231. DOI: 10.3788/fgxb20113203.0227 |
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| 作者姓名： | 徐磊华 强颖怀 江利 |
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| 作者单位： | 中国矿业大学材料科学与工程学院; |
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| 基金项目： | 中国矿业大学科技攀登计划(ON090237)资助项目 |
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| 摘 要： | 以正硅酸乙酯(TEOS)为SiO2的前驱物,硝酸镉为镉源,硫脲为硫源,用溶胶-凝胶法制备了CdS量子点掺杂的SiO2干凝胶,利用XRD、紫外-可见吸收光谱、光致发光谱对其性质进行研究.样品的测试结果表明在SiO2干凝胶的网状结构中形成了CdS量子点,平均粒径为5.1 nm.SiO2凝胶中CdS吸收峰位置明显蓝移.在一定...
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| 关 键 词： | 二氧化硅凝胶 光致发光 CdS量子点 溶胶-凝胶法 |
Photoluminescent Properties of CdS Quantum Dots Doped in Silica Xerogel |
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| XU Lei-hua,QIANG Ying-huai,JIANG Li. Photoluminescent Properties of CdS Quantum Dots Doped in Silica Xerogel[J]. Chinese Journal of Luminescence, 2011, 32(3): 227-231. DOI: 10.3788/fgxb20113203.0227 |
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| Authors: | XU Lei-hua QIANG Ying-huai JIANG Li |
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| Affiliation: | XU Lei-hua,QIANG Ying-huai,JIANG Li(School of Materials Science and Engineering,China University of Mining and Technology,Xuzhou 221116,China) |
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| Abstract: | The CdS nanocryticles doped silica xerogels were prepared by using the sol-gel method,where tetraethoxysilane(TEOS) was employed as the main precursor and cadmium nitrate,thiourea as start materials.The X-ray diffraction pattern indicated that silica xerogels are noncrystalline structure and the mean diameter of the CdS particles is 5.1 nm.The PL emission spectrum of the undoped silica xerogels showed weak emission peaked at 460 nm that could be attributed to the intrinsic defect states of silica xerogel.Fo... |
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| Keywords: | silica xerogels photoluminescence CdS nanoparticles sol-gel |
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