| a-Si:H/a-SiNx:H多层膜的皮秒时间分辨光致发光 |
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| 引用本文： | 黄旭光,汪河洲,佘卫龙,李庆行,余振新,金波,彭少麒.a-Si:H/a-SiNx:H多层膜的皮秒时间分辨光致发光[J].物理学报,1991,40(10):1677-1682. |
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| 作者姓名： | 黄旭光 汪河洲 佘卫龙 李庆行 余振新 金波 彭少麒 |
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| 作者单位： | (1)中山大学激光与光谱学研究所,广州,510275; (2)中山大学物理系,广州,510275 |
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| 基金项目： | 9055808博士点科学基金 |
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| 摘 要： | 用时间分辨激光光谱学方法研究了a-Si:H/a-SiNx:H多层膜光生载流子初始动力学过程,分析了非平衡载流子的热释和复合机制。实验还表明多层膜的发光衰减截止时间、迁移率边和带尾宽度随N含量呈非单调变化规律,转折发生在x=0.85附近,这很可能是由于不同N组份引起多层膜内电场和结构变化的结果。
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| 关 键 词： | Si 多层膜 时间分辨 光致发光 皮秒 |
| 收稿时间： | 1990-11-04 |
PICOSECOND PHOTOLUMINESCENCE IN a-Si:H/a-SiNx:H MULTILAYERS |
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| HUANG XU-GUANG,WANG HE-ZHOU,SHE WE-LONG,LI QING-XING,YU ZHEN-XIN,JIN BO and PENG SHAO-QI.PICOSECOND PHOTOLUMINESCENCE IN a-Si:H/a-SiNx:H MULTILAYERS[J].Acta Physica Sinica,1991,40(10):1677-1682. |
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| Authors: | HUANG XU-GUANG WANG HE-ZHOU SHE WE-LONG LI QING-XING YU ZHEN-XIN JIN BO and PENG SHAO-QI |
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| Abstract: | The initial dynamics of photogenerated carriers in a-Si:H/a-SiNx:H multilayers has been investigated with time-resolved laser spectroscopy. The mechanisms of thermalization and recombination of these carriers are analysed. The results also reveal that the decay time cutoff, the mobility edge and the band-tail width vary non-monotonously with respect to nitrogen content with a turning point near x = 0.85, which may result from the changes of the internal electric field and the structure of multilayer with nitrogen content. |
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