| Ge团簇组装纳米薄膜的制备及光学性质 |
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| 引用本文： | 龚艳春,刘传先,武文远.Ge团簇组装纳米薄膜的制备及光学性质[J].光电子．激光,2005,16(7):802-805. |
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| 作者姓名： | 龚艳春 刘传先 武文远 |
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| 作者单位： | 解放军理工大学理学院,江苏南京,210007;上海第二工业大学物理系,上海,201209 |
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| 摘 要： | 用惰性气体凝聚淀积技术制备半导体Ge团簇及其构成纳米薄膜。利用透射电子显微镜(TEM)、原子力显微镜(AFM)及光谱分析方法对所获得的样品进行分析研究。分别在室温和液N2冷却条件下获得了具有2种不同微结构和形貌特征的氧化层包裹的Ge团簇组装薄膜。紫外一可见光光谱分析表明，这类纳米结构薄膜具有1．0～2．9eV的光学带隙蓝移，并可用量子限制效应来解释其起源。
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| 关 键 词： | 惰性气体冷凝 Ge团簇 光学带隙蓝移 |
| 文章编号： | 1005-0086(2005)07-0802-04 |
Syntheses and Optical Properties of Ge Cluster-based Nanofilms |
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| GONG Yan-chun,LIU Chuan-xian,WU Wen-yuan.Syntheses and Optical Properties of Ge Cluster-based Nanofilms[J].Journal of Optoelectronics·laser,2005,16(7):802-805. |
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| Authors: | GONG Yan-chun LIU Chuan-xian WU Wen-yuan |
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| Affiliation: | GONG Yan-chun1,LIU Chuan-xian2,WU Wen-yuan 1 |
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| Abstract: | Ge clusters and their assembled nanofilms were prepared by means of the inert-gas condensation method and analyzed by electron microscope and UV-visible photo spectrophotometry.Two kinds of nanostructured films assembled from Ge clusters covered with oxide shells were obtained with different microstructure and morphology.Spectrophotometric measurements were performed for these samples in ultraviolet,visible and near-IR region,and show obvious blue-shift of the optical band gap as large as 1.0-2.0 eV in comparison with the bulk,which can be explained by quantum confined effect. |
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| Keywords: | inert-gas condensation Ge clusters blue-shift of optical band gap |
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