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Near-infrared down-conversion luminescence in Yb3+ doped self-activated TbZn(B5O10) phosphor

HAO LI1, YIXUAN LU1, CHENXIA LI1,* , DEGANG DENG2,* , KEZHEN RONG1, XUFENG JING1, LE WANG1, SHIQING XU2

Affiliation

  1. College of Optical and Electronic Technology, China Jiliang University, Hangzhou, 310018, China
  2. College of Material Science and Engineering, China Jiliang University, Hangzhou, 310018, China

Abstract

A series of near-infrared quantum-cutting Tb3+ -based Tb1-xZn(B5O10):xYb3+ phosphor was prepared by a high-temperature solid-state method according to rare-earth’s self-activation characteristic. The lattice structure and luminescence performances under UV-light’s excitation were studied. The conclusion that the doped Yb3+ ion only occupies Tb3+ ion’s site was revealed by XRD patterns. The Tb3+ 5D4- 7FJ characteristic emission spectra and the 974 nm near-infrared light generated by Yb3+ 2F5/2- 2F7/2 emissions were discussed in Tb1-xZn(B5O10):xYb3+ under 365-nm-UV-light excitation. The cooperative energy transfer mechanism between Tb3+ and Yb3+ was established by the fluorescence spectra. The above investigations indicate Tb1-xZn(B5O10):xYb3+ a potential down-converter layer in silicon-based solar cells..

Keywords

Phosphor, Tb1-xZn(B5O10):xYb3+, Cooperative energy transfer.

Submitted at: Aug. 26, 2018
Accepted at: June 14, 2019

Citation

HAO LI, YIXUAN LU, CHENXIA LI, DEGANG DENG, KEZHEN RONG, XUFENG JING, LE WANG, SHIQING XU, Near-infrared down-conversion luminescence in Yb3+ doped self-activated TbZn(B5O10) phosphor, Journal of Optoelectronics and Advanced Materials Vol. 21, Iss. 5-6, pp. 373-384 (2019)