Preparation and Up-Conversion Luminescence Dynamic Process of Yb3+/Er3+ Co-Doped BaGd2ZnO5
YANG Yan-min1, JIAO Fu-yun1, SU Hong-xin1*, LI Zi-qiang1, LIU Yun-feng2, LI Zhi-qiang1, YANG Zhi-ping1
1. College of Science and Technology, Hebei University, Baoding 071002, China 2. Industrial and Commercial College, Hebei University, Baoding 071002, China
Abstract：Yb3+/Er3+ co-doped BaGd2ZnO5 phosphors were prepared by using the sol-gel method. The up-conversion luminescence powers and efficiencies were measured under different excitation densities. The obtained data showed that the green luminescence power was proportional to the second-order of that of the excitation power under the lower excitation density and linearly in the higher one. The up-conversion mechanism under different excitation power was described by a rate equation. Yb3+/Er3+ co-doped BaGd2ZnO5 was excited by 971 nm LD laser with a square wave signal modulation and the rise and decay processes of green up-conversion luminescence were measured. In a low excitation condition, the rate equation of the energy level 4S3/2 for Er3+ ions was used to fit the green rise and decay processes in order to fix the relevant parameters, and confirm that the population of 4S3/2 energy level of Er3+ ion mainly came from the energy transfer from Yb3+ to Er3+.
杨艳民1，焦福运1，苏红新1*，李自强1，刘云峰2，李志强1，杨志平1 . Yb3+/Er3+共掺BaGd2ZnO5上转换发光动力学过程的研究 [J]. 光谱学与光谱分析, 2012, 32(10): 2637-2641.
YANG Yan-min1, JIAO Fu-yun1, SU Hong-xin1*, LI Zi-qiang1, LIU Yun-feng2, LI Zhi-qiang1, YANG Zhi-ping1 . Preparation and Up-Conversion Luminescence Dynamic Process of Yb3+/Er3+ Co-Doped BaGd2ZnO5 . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(10): 2637-2641.
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