| CdS_(0.1)Se_(0.9)半导体纳米晶体的生长和吸收光谱的研究 |
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| 引用本文： | 孙平,王引书,颜其礼,黄平,林永昌,王若桢.CdS_(0.1)Se_(0.9)半导体纳米晶体的生长和吸收光谱的研究[J].北京师范大学学报(自然科学版),2000(2). |
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| 作者姓名： | 孙平 王引书 颜其礼 黄平 林永昌 王若桢 |
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| 作者单位： | 北京师范大学物理学系!100875，北京，36岁，女，高级实验师，北京师范大学物理学系!100875，北京，北京师范大学物理学系!100875，北京，北京师范大学物理学系!100875，北京，北京师范大学物理学系!100875，北京，北京师范大学物理学系!100875，北京 |
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| 摘 要： | 采用两步退火方法获得了嵌埋于玻璃基体内CdSxSe1-x的半导体纳米晶体 ,其平均尺寸随退火时间的增加而增大 .从实验测量的室温吸收谱上看到 ,当纳米晶体的平均直径从 5.6 1nm减小到 4 .6 9nm时 ,其吸收边向高能方向移动了 0 .0 89eV .用有效质量近似模型计算了半导体纳米晶体的吸收边相对其体材料的移动 ,将理论计算与实验结果进行了比较 .
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| 关 键 词： | 半导体纳米晶体 吸收光谱 量子尺寸效应 |
QUANTUM-SIZE EFFECT OF SEMICONDUCTOR NANOCRYSTALS CdS_(0.1)Se_(0.9) |
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| Sun Ping,Wang Yinshu,Yan Qili,Huang Ping,Lin Yongchang,Wang Ruozhen.QUANTUM-SIZE EFFECT OF SEMICONDUCTOR NANOCRYSTALS CdS_(0.1)Se_(0.9)[J].Journal of Beijing Normal University(Natural Science),2000(2). |
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| Authors: | Sun Ping Wang Yinshu Yan Qili Huang Ping Lin Yongchang Wang Ruozhen |
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| Abstract: | Semiconductor nanocrystals CdS x Se 1-x embedded in silicate glass matrix are obtained with two step annealing method. The average size of CdS x Se 1- x nanocrystals grows with increasing heating time. From room temperature optical absorption spectrum, 0.089 eV high energy shift of absorption edge of CdS 0.1 Se 0.9 has been measured as the mean diameter decreases from 5.61 nm to 4.69 nm. The shift of absorption edge of CdS 0.1 Se 0.9 nanocrystals, compared with that of bulk, is calculated by means of effective mass approximation model. The calculation and experimental results are compared. |
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| Keywords: | semiconductor nanocrystals absorption spectrum quantum size effect |
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