J. Mater. Sci. Technol. ›› 2023, Vol. 138: 138-148.DOI: 10.1016/j.jmst.2022.07.055

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Multi-ratio optical thermometry and energy storage characteristics of Yb3+/Er3+/Tm3+ doped BaNb2O6 transparent glass-ceramics

Junhao Xing, Feng Luo, Yaoyi Qin, Xiaolu Chen, Yingying Liang, Zhixin Gao, Fei Shang*, Huarui Xu*, Guohua Chen*   

  1. School of Material Science and Engineering, Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China
  • Received:2022-06-07 Revised:2022-07-25 Accepted:2022-07-25 Published:2023-03-01 Online:2023-03-03
  • Contact: * E-mail addresses:. lavasf@163.com (F. Shang), huaruixu@guet.edu.cn (H. Xu), cgh1682002@163.com (G. Chen)

Abstract: In order to meet the needs of new materials gradually developing towards miniaturization, integration, and light weight, multifunctional BaNb2O6: Yb3+/Er3+/Tm3+ transparent glass-ceramics were successfully prepared by melt quenching and controllable crystallization. Its structure, luminescence, and energy transmission were studied. Using the opposite temperature dependence of the Tm3+ emission band and the corresponding large energy level gap, a maximum relative sensitivity of 2.3% K-1 based on thermal coupling levels (TCLs) is obtained in a wide temperature range (298-673 K). The multi-ratio optical thermometry based on TCLs and non-TCLs is successfully realized by using the different emission bands of double emission centers, which makes it possible for self-reference optical temperature measurement modes. In addition, the transparent glass-ceramic exhibits excellent electrical properties under 700 kV cm-1 electric field: high discharge energy density (Wd = 0.99 J cm-3), huge instantaneous power density (225.3 MW cm-3), and ultra-fast discharge rate (T0.9 ≤ 15.8 ns). The prepared glass-ceramic is expected to be a new type of lead-free multifunctional photoelectric material for temperature sensors and transparent electronic devices.

Key words: Glass ceramics, Luminescence, Optical thermometry, Energy storage