| 一种提高SiO2凝胶玻璃中ZnSe纳米晶稳定性的方法 |
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| 引用本文： | 孔凡滔,汪敏强,王云鹏,姚熹,姜海青. 一种提高SiO2凝胶玻璃中ZnSe纳米晶稳定性的方法[J]. 高等学校化学学报, 2005, 26(1): 155-157 |
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| 作者姓名： | 孔凡滔 汪敏强 王云鹏 姚熹 姜海青 |
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| 作者单位： | 西安交通大学电子陶瓷与器件教育部重点实验室,西安,710049 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);中国-以色列合作项目 |
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| 摘 要： | 半导体纳米品材料具有很大的应用潜力，然而非氧化物半导体纳米晶在空气中通常不稳定．因此其应用受到限制．纳米品不稳定主要是因为其表面原子配位不足，存在大量的悬空键，d使其很容易与环境中的物质发生反应而逐渐变质．人们通常采用惰性介质包覆的方法来提高纳米晶的稳定性，
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| 关 键 词： | ZnSe 纳米晶 稳定性 Zn空位 |
| 文章编号： | 0251-0790(2005)01-0155-03 |
| 收稿时间： | 2003-12-23 |
Enhancement of the Stability of ZnSe Nanocrystals Doped in Silica by a New Method |
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| KONG Fan-Tao,WANG Min-Qiang,WANG Yun-Peng,YAO Xi,JIANG Hai-Qing. Enhancement of the Stability of ZnSe Nanocrystals Doped in Silica by a New Method[J]. Chemical Research In Chinese Universities, 2005, 26(1): 155-157 |
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| Authors: | KONG Fan-Tao WANG Min-Qiang WANG Yun-Peng YAO Xi JIANG Hai-Qing |
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| Affiliation: | Key Laboratory of Electronic Ceramic Materials and Device of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | ZnSe nanocrystals doped in silica were prepared by using sol-gel process and in situ growth technique. It was found that when n(Zn):n(Se)=1:1 in the sol precursor, the resultant ZnSe nanocrystals were rather instable and after several days the color of the ZnSe nanocrystals-doped SiO2 glass changed from yellow to red. According to the analysis results of XRD, UV-Vis transmission spectra and XPS, the existence of many zinc vacancies in the ZnSe nanocrystals was considered as the reason of the instability. Based on this reason, the synthesis process was improved by introducing much larger amount of zinc to the precursor sol and this made the stability of the ZnSe nanocrystals improved greatly from several days to more than 6 months. |
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| Keywords: | ZnSe |
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