中国物理B ›› 2016, Vol. 25 ›› Issue (12): 127103-127103.doi: 10.1088/1674-1056/25/12/127103

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Identification of surface oxygen vacancy-related phonon-plasmon coupling in TiO2 single crystal

Jun-Hong Guo(郭俊宏), Ting-Hui Li(李廷会), Fang-Ren Hu(胡芳仁), Li-Zhe Liu(刘力哲)   

  1. 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
  • 收稿日期:2016-08-16 修回日期:2016-08-29 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: Fang-Ren Hu, Li-Zhe Liu E-mail:hufr@njupt.edu.cn;lzliu@nju.edu.cn
  • 基金资助:

    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).

Identification of surface oxygen vacancy-related phonon-plasmon coupling in TiO2 single crystal

Jun-Hong Guo(郭俊宏)1, Ting-Hui Li(李廷会)2, Fang-Ren Hu(胡芳仁)1, Li-Zhe Liu(刘力哲)3   

  1. 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
  • Received:2016-08-16 Revised:2016-08-29 Online:2016-12-05 Published:2016-12-05
  • Contact: Fang-Ren Hu, Li-Zhe Liu E-mail:hufr@njupt.edu.cn;lzliu@nju.edu.cn
  • Supported by:

    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).

RichHTML

0

PDF (PC)

227

赞

摘要：

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 TiO2 single crystal by pulsed laser irradiation. Raman spectra showed that the intensity of Eg 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.

关键词: luminescent materials, Raman scattering, oxygen vacancies

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 TiO2 single crystal by pulsed laser irradiation. Raman spectra showed that the intensity of Eg 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.

Key words: luminescent materials, Raman scattering, oxygen vacancies

中图分类号:  (Semiconductor compounds)

  • 71.20.Nr
78.40.Fy (Semiconductors) 78.30.-j (Infrared and Raman spectra)