| ZnS/SiO2介孔组装体系的光吸收特性 |
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| 引用本文： | 杨一军,刘强春,朱玉瑛.ZnS/SiO2介孔组装体系的光吸收特性[J].江西师范大学学报(自然科学版),2003,27(4):331-334. |
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| 作者姓名： | 杨一军 刘强春 朱玉瑛 |
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| 作者单位： | 淮北煤炭师范学院,物理系,安徽,淮北,235000 |
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| 基金项目： | 安徽省教育厅科研基金资助(2001kjzolzc) |
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| 摘 要： | 通过溶胶-凝胶法获得块材ZnS纳米颗粒／介孔SiO2组装体系(ZnS／SiO2)样品，分别在氮气和空气气氛中做了退火处理，发现吸收边位置随复合量和退火温度不同而移动，经计算颗粒的理论值与其自由激子半径相当，说明吸收边的移动起因于量子限域效应。
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| 关 键 词： | 硫化锌纳米颗粒 二氧化硅介孔组装体系 光吸收特性 溶胶-凝胶法 吸收边 纳米材料 |
| 文章编号： | 1000-5862(2003)04-0331-04 |
| 修稿时间： | 2003年2月28日 |
The Properties of the Optical Absorption for ZnS/SiO2 Assembly |
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| YANG Yi-jun,LIU Qiang-chun,ZHU Yu-ying.The Properties of the Optical Absorption for ZnS/SiO2 Assembly[J].Journal of Jiangxi Normal University (Natural Sciences Edition),2003,27(4):331-334. |
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| Authors: | YANG Yi-jun LIU Qiang-chun ZHU Yu-ying |
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| Abstract: | Monolithic mesoporous ZnS/SiO_2 assembly systems are obtained by sol-gel technique. The as-prepared samples are annealed under air and nitrogen, respectively.It is observed that the absorption edge of the ZnS/SiO_2 shifts in comparison with that of the bulk ZnS as the annealing temperature change as well as the loading of ZnS in SiO_2. The calculating result shows that the size of ZnS particles in the mesoporous SiO_2 is similar to its exciton radius on quantity. The shift of the absorption edge is attributed to the quantum size effect. |
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| Keywords: | ZnS nanoparticles mesoporous assembly absorption edge |
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