中国物理B ›› 2020, Vol. 29 ›› Issue (8): 83301-083301.doi: 10.1088/1674-1056/ab8a3d

• SPECIAL TOPIC—Ultracold atom and its application in precision measurement • 上一篇    下一篇

Photoluminescence in wide band gap corundum Mg4Ta2O9 single crystals

Liang Li(李亮), Yu-Lu Zheng(郑雨露), Yu-Xin Hu(胡雨馨), Fang-Fei Li(李芳菲), Qiang Zhou(周强), Tian Cui(崔田)   

  1. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130000, China
  • 收稿日期:2020-02-14 修回日期:2020-04-09 出版日期:2020-08-05 发布日期:2020-08-05
  • 通讯作者: Qiang Zhou E-mail:zhouqiang@jlu.edu.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program, China (Grant No. 2017YFA0403704), the National Natural Science Foundation of China (Grant Nos. 11304113, 11474127, and 11574112), and the Fundamental Research Funds for the Central Universities, China.

Photoluminescence in wide band gap corundum Mg4Ta2O9 single crystals

Liang Li(李亮), Yu-Lu Zheng(郑雨露), Yu-Xin Hu(胡雨馨), Fang-Fei Li(李芳菲), Qiang Zhou(周强), Tian Cui(崔田)   

  1. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130000, China
  • Received:2020-02-14 Revised:2020-04-09 Online:2020-08-05 Published:2020-08-05
  • Contact: Qiang Zhou E-mail:zhouqiang@jlu.edu.cn
  • Supported by:

    Project supported by the National Key Research and Development Program, China (Grant No. 2017YFA0403704), the National Natural Science Foundation of China (Grant Nos. 11304113, 11474127, and 11574112), and the Fundamental Research Funds for the Central Universities, China.

摘要:

As is well known, the basic intrinsic properties of materials can be significant for their practical applications. In this work, the room-temperature absorption, transmittance, reflectance spectra, and relative photoelectricities parameters of the Mg4Ta2O9 crystals are demonstrated. Meanwhile, the polarized Raman spectra of Mg4Ta2O9 crystals are also described. The room-temperature photoluminescence (PL) and the temperature-dependent PL for Mg4Ta2O9 crystals are obtained. Significantly, we observe a phonon-participated PL process in Mg4Ta2O9.

关键词: corundum, band gap energy, polarized Raman, photoelectric, ultraviolet emission

Abstract:

As is well known, the basic intrinsic properties of materials can be significant for their practical applications. In this work, the room-temperature absorption, transmittance, reflectance spectra, and relative photoelectricities parameters of the Mg4Ta2O9 crystals are demonstrated. Meanwhile, the polarized Raman spectra of Mg4Ta2O9 crystals are also described. The room-temperature photoluminescence (PL) and the temperature-dependent PL for Mg4Ta2O9 crystals are obtained. Significantly, we observe a phonon-participated PL process in Mg4Ta2O9.

Key words: corundum, band gap energy, polarized Raman, photoelectric, ultraviolet emission

中图分类号:  (Raman and Rayleigh spectra (including optical scattering) ?)

  • 33.20.Fb
61.05.cp (X-ray diffraction) 07.55.Jg (Magnetometers for susceptibility, magnetic moment, and magnetization measurements)