| Ag纳米颗粒对富Ag二氧化硅薄膜电致发光谱的影响 |
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| 作者姓名： | Ran GZ Wen J You LP Xu WJ |
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| 作者单位： | 人工微结构和介观物理国家重点实验室,北京大学物理学院,北京100871 |
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| 基金项目： | 国家自然科学基金项目(10874011,60877022); 国家(973计划)项目(2007CB613401)资助 |
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| 摘 要： | 利用磁控溅射和热退火在硅衬底上制备了Ag纳米颗粒镶嵌的氧化硅薄膜(SiO2∶ Ag),制作了电致发光结构ITO/SiO2∶Ag/p-Si,观测到了可见区的电致发光.发现薄膜中的Ag纳米颗粒不仅成倍地提高器件的发光强度,还明显地移动电致发光的峰位.Ag含量越高,颗粒越大,发光峰位越红移.氧化硅中的发光中心与纳米Ag间的电...
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| 关 键 词： | 电致发光 Ag纳米颗粒 局域表面等离激元 |
Effects of Ag nanocrystals on electroluminescence in Si oxide films |
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| Ran GZ,Wen J,You LP,Xu WJ.Effects of Ag nanocrystals on electroluminescence in Si oxide films[J].Spectroscopy and Spectral Analysis,2011,31(9):2324-2327. |
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| Authors: | Ran Guang-Zhao Wen Jie You Li-Ping Xu Wan-Jin |
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| Institution: | RAN Guang-zhao,WEN Jie,YOU Li-ping,XU Wan-jin State Key Laboratory for Mesoscopic Physics and School of Physics,Peking University,Beijing 100871,China |
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| Abstract: | Ag nanocrystal-embedded silicon oxide (SiO2 : Ag) films with varying Ag fractions were prepared on p-Si substrate by magnetron co-sputtering and thermal annealing. Visible electroluminescence (EL) was observed from the structures of ITO/SiO2 : Ag/p-Si. The authors found that Ag nanocrystals in the SiO2 film can not only shift the EL peak evidently but also enhance the EL intensity markedly. The larger the Ag fractions in the EL structures, the longer the peak wavelengths. The electromagnetic interactions of the Ag nanocrystals with the emitters in the film via local surface plasmons are considered responsible for these experimental results. |
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| Keywords: | Electroluminescence Ag nanocrystal Surface plasmon |
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