| 稀土对金属纳米粒子-介质复合薄膜(Ag-BaO)光电发射性能的增强 |
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| 引用本文： | 许北雪,吴锦雷,刘惟敏,杨海,邵庆益,刘盛,薛增泉,吴全德.稀土对金属纳米粒子-介质复合薄膜(Ag-BaO)光电发射性能的增强[J].物理学报,2001,50(5):977-980. |
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| 作者姓名： | 许北雪 吴锦雷 刘惟敏 杨海 邵庆益 刘盛 薛增泉 吴全德 |
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| 作者单位： | 北京大学电子学系, |
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| 基金项目： | 国家自然科学基金(批准号:60071017);北京自然科学基金(批准号:2992019)资助的课题. |
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| 摘 要： | 用真空蒸发沉积的方法制备了掺杂稀土的金属纳米粒子介质复合薄膜(Ag-BaO薄膜).与不掺杂稀土的Ag-BaO薄膜相比,其光电发射能力提高了近40%.透射电镜分析表明,掺杂稀土后,Ag-BaO薄膜中的Ag纳米粒子明显细化、球化、密度增大.这表明Ag纳米粒子的细化,使得其在光作用下,光电子更容易通过隧道效应穿过界面位垒逸出,导致光电发射能力增强
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| 关 键 词： | 光电发射 稀土 薄膜 纳米粒子 |
| 修稿时间： | 2000年10月10 |
ENHANCED PHOTOEMISSION
FROM METAL NANOPARTICLE COMPOSITE THIN FILMS (Ag-BaO) DOPED WITH RARE-EARTH ELEMENTS |
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| XU BEI-XUE,WU JUN-LEI,LIU WEI-MIN,YANY HAI,SHAO QING-YI,LIU SHENG,Xue Zeng-Quan,WU QUAN-DE.ENHANCED PHOTOEMISSION
FROM METAL NANOPARTICLE COMPOSITE THIN FILMS (Ag-BaO) DOPED WITH RARE-EARTH ELEMENTS[J].Acta Physica Sinica,2001,50(5):977-980. |
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| Authors: | XU BEI-XUE WU JUN-LEI LIU WEI-MIN YANY HAI SHAO QING-YI LIU SHENG Xue Zeng-Quan WU QUAN-DE |
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| Abstract: | A metal nanoparticles-composite thin film (Ag-BaO), doped by rare-earth elements, was grown by vacuum deposition. Compared with the normal Ag-BaO thin film, the photoemission current of the doped Ag-BaO thin film increases by about 40%. The transmission electron micrograph indicated that Ag nanoparticles become smaller when doped with rare-earth. With the smaller size of Ag nanoparticles, photoelectrons are easier to transgress from Ag nanoparticles via tunnel effect. Thus the photomission current increases. |
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| Keywords: | photoemission rare earth thin film nanoparticles |
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