| CeOx与ZnO纳米复合粉体的制备及其发光性能 |
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| 引用本文： | 郭书霞,张兴堂,赵慧玲,李蕴才,黄亚彬,杜祖亮.CeOx与ZnO纳米复合粉体的制备及其发光性能[J].光谱学与光谱分析,2005,25(6):840-843. |
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| 作者姓名： | 郭书霞 张兴堂 赵慧玲 李蕴才 黄亚彬 杜祖亮 |
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| 作者单位： | 河南大学特种功能材料重点实验室,河南,开封,475001 |
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| 基金项目： | 国家自然科学基金(90306010,20371015)和"973"前期专项(2002CCC02700)资助课题 |
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| 摘 要： | 通过溶胶-凝胶法制备CeOx／ZnO纳米复合粉体，并对其结构和光致发光特性进行了研究。发现500℃烧结出的复合粉体在502nm处的绿光发射同纯ZnO的相比有显著的增强；600℃烧结的样品在603nm出现新的发光峰。通过XRD和XPS分析认为荧光增强的主要原因同粉体中铈主要以Ce^3 形式存在有关，新的发光峰可能来源于ZnO／CeO2界面处形成的新的能级跃迁。
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| 关 键 词： | ZrO 复合粉体 发光 |
| 文章编号： | 1000-0593(2005)06-0840-04 |
| 修稿时间： | 2004年3月26日 |
Preparation and Luminescence of CeOx/ZnO Nanocomposite Powders |
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| GUO Shu-xia,ZHANG Xing-tang,ZHAO Hui-ling,LI Yun-cai,HUANG Ya-bin,DU Zu-Liang.Preparation and Luminescence of CeOx/ZnO Nanocomposite Powders[J].Spectroscopy and Spectral Analysis,2005,25(6):840-843. |
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| Authors: | GUO Shu-xia ZHANG Xing-tang ZHAO Hui-ling LI Yun-cai HUANG Ya-bin DU Zu-Liang |
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| Institution: | Key Laboratory of Special Functional Materials, Henan University, Kaifeng 475001, China. |
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| Abstract: | CeO_x/ZnO nanocomposite powders were prepared by sol-gel process. The pow der samples were examined by XRD, TEM, XPS and photoluminescence (PL). PL enhance ment of nanocomposite powder at 502 nm compared to pure ZnO was observed when Ce 3+ were present in samples. New peak at 603 nm was observed when Ce 4+ were present. PL enhancement of nanocomposite powder was correlated with more oxygen vacancies which were caused by Ce 3+. The new peak at 603 nm is attributed to new energy transition in the interface of CeO_2/ZnO. |
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| Keywords: | ZnO Nanocomposite Luminescence |
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