| 一维CdS纳米结构的光致发光和微腔性能研究 |
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| 引用本文： | 闫国庆,李旦,张立欢,赵博文,符秀丽,高旻.一维CdS纳米结构的光致发光和微腔性能研究[J].北京大学学报(自然科学版),2011,47(3):453-458. |
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| 作者姓名： | 闫国庆 李旦 张立欢 赵博文 符秀丽 高旻 |
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| 作者单位： | 1. 北京大学信息科学技术学院电子学系,教育部纳米器件物理与化学重点实验室,北京,100871
2. 北京邮电大学理学院,北京,100876 |
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| 基金项目： | 国家自然科学基金(51072006,60806005)资助 |
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| 摘 要： | 运用低温变温宏观光致发光和共焦空间分辨光致发光光谱技术,研究了由催化剂辅助化学气相沉积方法生长的一维CdS纳米结构(纳米带和纳米棒)的发光机制及单个纳米结构光学微腔的性质。在10-290 K之间,光谱对温度的依赖关系清楚地显示了CdS纳米结构的室温近带边发光主要由自由激子发光及其声子伴线组成。纳米结构的端面和侧壁均可对近带边发光表现出较强的束缚作用,形成法布里-珀罗(FP)和回音壁(WG)两种谐振腔,并表现出较明显的非线性特征。深能级的缺陷发光在WG微腔中形成较强的等间距腔模式,而在FP微腔中其在轴向上的传播则损耗较大。上述结果有助于理解两种纳米结构光学微腔的机制,并支持了与激子相关的微腔模式的激子极化激元模型。
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| 关 键 词： | 一维CdS纳米结构 光致发光 光学微腔 |
Studies of Photoluminescence and Microcavity Properties of One-Dimensional CdS Nanostructures |
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| YAN Guoqing,LI Dan,ZHANG Lihuan,ZHAO Bowen,FU Xiuli,GAO Min.Studies of Photoluminescence and Microcavity Properties of One-Dimensional CdS Nanostructures[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2011,47(3):453-458. |
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| Authors: | YAN Guoqing LI Dan ZHANG Lihuan ZHAO Bowen FU Xiuli GAO Min |
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| Institution: | YAN Guoqing1,LI Dan2,ZHANG Lihuan1,ZHAO Bowen1,FU Xiuli2,GAO Min1,1.Key Laboratory for the Physics and Chemistry of Nanodevices(MOE),School of Electronics Engineering and Computer Science,Peking University,Beijing 100871,2.School of Science,Beijing University of Post and Telecommunications,Beijing 100876 |
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| Abstract: | The authors perform combined temperature dependent macro-photoluminescence(PL) and confocal spatially resolved PL measurements to study the luminescence mechanism and the microcavity properties of one-dimensional CdS nanostructures(nanobelts and nanorods) grown by catalyst-assisted chemical vapor deposition.The dependence of the PL on the temperature(10-290 K) indicates clearly that the room temperature near band edge(NBE) emission mainly consists of excitonic emission and its phonon replicas.Both the end f... |
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| Keywords: | one-dimensional CdS nanostructures photoluminescence optical micro-cavities |
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