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石墨烯对ZnO微米棒光学特性的影响
Abnormal Optical Properties in ZnO Mircorods Introduced by Graphene
- 发光学报 2015年36卷第12期 页码：1370-1374
- 作者机构：
1. 中山大学 物理科学与工程技术学院, 广东 广州 510275
2. 江苏大学 材料科学与工程学院, 江苏 镇江 212013
- 作者简介：
- 基金信息：国家自然科学基金(11304127)();江苏大学高级人才专项(1283000262) 资助项目()
DOI：10.3788/fgxb20153612.1370
中图分类号： O482.31纸质出版日期：2015-12-10，
收稿日期：2015-9-9，
修回日期：2015-10-12，
扫 描 看 全 文
吴春霞, 苏龙兴, 何自娟等. 石墨烯对ZnO微米棒光学特性的影响[J]. 发光学报, 2015,36(12): 1370-1374
WU Chun-xia, SU Long-xing, HE Zi-juan etc. Abnormal Optical Properties in ZnO Mircorods Introduced by Graphene[J]. Chinese Journal of Luminescence, 2015,36(12): 1370-1374
吴春霞, 苏龙兴, 何自娟等. 石墨烯对ZnO微米棒光学特性的影响[J]. 发光学报, 2015,36(12): 1370-1374 DOI： 10.3788/fgxb20153612.1370.
WU Chun-xia, SU Long-xing, HE Zi-juan etc. Abnormal Optical Properties in ZnO Mircorods Introduced by Graphene[J]. Chinese Journal of Luminescence, 2015,36(12): 1370-1374 DOI： 10.3788/fgxb20153612.1370.
摘要
采用化学气相沉积(CVD)方法制备了具有良好结晶质量和(002)择优取向的ZnO微米棒。在此基础上
选取单根ZnO微米棒
将其部分搁置于单层石墨烯表面。光致发光(PL)谱结果表明
石墨烯不仅增强了ZnO微米棒的紫外发光强度
同时也对光场在ZnO微米棒中的分布有很大的限域作用。分析认为这是由于石墨烯的表面等离子效应引起了ZnO微米棒与石墨烯之间的光-物质相互作用导致的。在拉曼(Raman)光谱中
石墨烯对ZnO微米棒的E
2
(L)声子振动模和E
2
(H)声子振动模的强度具有明显的减弱效应
这进一步证明二者之间存在光子的传输和电荷的转移
从而导致其晶格振动受到抑制。
Abstract
High crystal quality and (002) orientation preferred ZnO microrods were grown by the method of chemical vapor deposition (CVD). The optical properties of ZnO microrod on graphene substrate were investigated. The photoluminescence (PL) spectra revealed that the luminous intensity of ZnO microrod on graphene substrate was enhanced as twice as that without graphene substrate. The distribution of light field in ZnO microrod was also restricted by graphene. These are all caused by grapheme surface plasmon. In the case of ZnO microrod on the graphene substrate
E
2
(L) and E
2
(H) Raman intensity decreased dramatically by comparing with which of the ZnO microrod without graphene substrate. This further indicates that there is stronger light-matter interaction at the interface. Hence
the lattice vibration of ZnO microrod was restricted by the graphene.
关键词
ZnO微米棒单层石墨烯光致发光拉曼
Keywords
ZnO microrodssingle layer graphemephotoluminescenceRaman
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