| Identification of surface oxygen vacancy-related phonon–plasmon coupling in TiO_2 single crystal |
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| 引用本文： | 郭俊宏,李廷会,胡芳仁,刘力哲.Identification of surface oxygen vacancy-related phonon–plasmon coupling in TiO_2 single crystal[J].中国物理 B,2016,25(12):127103-127103. |
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| 作者姓名： | 郭俊宏 李廷会 胡芳仁 刘力哲 |
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| 作者单位： | 1. School of Optoelectronic Engineering and Grüenberg Research Center, Nanjing University of Posts and Telecommunicates, Nanjing 210023, China;
2. College of Electronic Engineering, Guangxi Normal University, Guilin 541004, China;
3. Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos. 61574080, 11404162, 61505085, and 61264008) and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20130549). |
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| 摘 要： |
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| 收稿时间： | 2016-08-16 |
Identification of surface oxygen vacancy-related phonon-plasmon coupling in TiO2 single crystal |
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| Affiliation: | 1. School of Optoelectronic Engineering and Grüenberg Research Center, Nanjing University of Posts and Telecommunicates, Nanjing 210023, China;
2. College of Electronic Engineering, Guangxi Normal University, Guilin 541004, China;
3. Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China |
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| Abstract: | Oxygen vacancies(OVs) play a critical role in the physical properties and applications of titanium dioxide nanostructures, which are widely used in electrochemistry and photo catalysis nowadays. In this work, OVs were artificially introduced in the surface of a pure TiO_2 single crystal by pulsed laser irradiation. Raman spectra showed that the intensity of E_g mode was enhanced. Theoretical calculations disclose that this was caused by the strong coupling effect between the phonon vibration and plasmon induced by the OVs-related surface deformation, and good agreement was achieved between the experiments and theory. |
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| Keywords: | luminescent materials Raman scattering oxygen vacancies |
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