| 纳秒脉冲激光制备的纳米硅光致发光研究 |
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| 引用本文： | 苏琴,黄伟其,陈汉琼,陈洪福,刘盛华,吴红英,张桂阳,高贵平.纳秒脉冲激光制备的纳米硅光致发光研究[J].贵州科学,2012,30(3):14-17. |
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| 作者姓名： | 苏琴 黄伟其 陈汉琼 陈洪福 刘盛华 吴红英 张桂阳 高贵平 |
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| 作者单位： | 贵州大学纳米光子物理研究所,光电子技术与应用省重点实验室,贵阳550025 |
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| 基金项目： | 国家自然科学基金(批准号:60966002)资助的课题 |
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| 摘 要： | 在氧气、空气或氮气环境中，用脉冲激光辐照加工出的纳米硅有较强的PL发光，将这些PL光谱进行高斯去卷积处理，可以得到不同的子峰，这是因为在氧气、空气或氮气中加工出的纳米硅能带带隙中有与氧和氮有关的局域态。结合 计算结果，在纳米硅中Si=0双键和si—N键等可引入的局域态对PL发光有贡献。
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| 关 键 词： | 纳米硅 光致发光 发光中心 |
PL Spectra of Silicon Nanocrystal Prepared by Pulse Laser |
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| SU Qin,HUANG Wei-qi,CHEN Han-qiong,CHEN Hong-fu,LIU Sheng-hua,WU Hong-ying,ZHANG Gui-yang,GAO Gui-ping.PL Spectra of Silicon Nanocrystal Prepared by Pulse Laser[J].Guizhou Science,2012,30(3):14-17. |
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| Authors: | SU Qin HUANG Wei-qi CHEN Han-qiong CHEN Hong-fu LIU Sheng-hua WU Hong-ying ZHANG Gui-yang GAO Gui-ping |
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| Institution: | SU Qin HUANG Wei-qi CHEN Han-qiong CHEN Hong-fu LIU Sheng-hua WU Hong-ying ZHANG Gui-yang GAO Guilping ( Provincial Key Lab for Photoelectron Technology and Application, Institute of Nanophotonic Physics, Guizhou Uni- versity, Guiyang, Guizhou 550025, China) |
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| Abstract: | There is a strong PL in silicon nanocrystals prepared by ns pulsed laser under the oxygen, air- gen. After Gaussian de-convolution of the PL spectra has been performed, different Gaussian peaks can be ob- tained, because there are Localized states related to oxygen and nitrogen in band gap of silicon nanocrystals pre- pared under oxygen, air or nitrogen. Combining with the calculation results, We found that localized states intro- duced by Si = 0 and Si-N in silicon nanocrystals make contributions to the PLemission. |
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| Keywords: | nano silicon PL spectra localized states |
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