| CdS,ZnS毫微晶的光学吸收与尺寸效应 |
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| 引用本文： | 沈琪敏,梁培辉.CdS,ZnS毫微晶的光学吸收与尺寸效应[J].光学学报,1992,12(8):59-763. |
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| 作者姓名： | 沈琪敏 梁培辉 |
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| 作者单位： | 中国科学院上海光学精密机械研究所 上海201800
(沈琪敏)，中国科学院上海光学精密机械研究所 上海201800(梁培辉) |
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| 摘 要： | 本文用高阶Mie散射理论研究了CdS、ZnS毫微晶的吸收(消光)光谱及其随微晶尺寸的变化,提出了在CdS、ZnS毫微晶半径大于～10nm时,吸收峰及吸收边的蓝移主要由经典尺寸效应所引起;在毫微晶半径小于～10nm时,吸收的蓝移主要是量子尺寸效应的贡献.
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| 关 键 词： | 半导体 毫微晶 光吸收 尺寸效应 |
| 收稿时间： | 1991/9/9 |
Optical absorption and size effect in CdS and ZnS microcrystallites |
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| SHEN QIMIN LIANG PEIHUI.Optical absorption and size effect in CdS and ZnS microcrystallites[J].Acta Optica Sinica,1992,12(8):59-763. |
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| Authors: | SHEN QIMIN LIANG PEIHUI |
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| Abstract: | With high order Mie scattering theory, we studied the absorption (extinction) spectra, of colloidal CdS, ZnS microcrystallites, and the dependence of the apectra on crystallite size. It is predicted that the blue shifts of absorption peak and absorption edge are mainly caused by classical size effect at the microcrystallite radii of CdS, ZnS larger than 10 nm, otherwise, the blue shifts are mainly due to quantum size effect. |
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| Keywords: | Mie scattering theory semiconductor microcryatallites optical absorp-tion size effect |
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