Energy Transfer from Ce3+ to Eu2+ and Electron Transfer from Ce3+ to Eu3+ in BaY2F8:Ce, Eu Systems

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (3): 358.

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Energy Transfer from Ce^³⁺ to Eu^²⁺ and Electron Transfer from Ce^³⁺ to Eu^³⁺ in BaY₂F₈:Ce, Eu Systems

ZHANG Xian-Ming², SU Hai-Quan¹, YE Ze-Ren¹, JIA Zhi-Hong¹, ZANG Chun-Yu¹, SHI Chun-Shan¹

1. Laboratory of Rare Earth Chemistryand Physics, Changchun Instituteof Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2. College of Chemistryand Chemical Engineering, Zhongshan University, Guangzhou 510275, China

Received:2000-03-13 Online:2001-03-24 Published:2001-03-24

Abstract

Abstract: Phorsphors of BaY₂F₈:Ce ³⁺, BaY₂F₈: Eu ²⁺ and BaY₂F₈:Ce, Eu were prepared by higher temperature solid reaction and their excitation, emission and diffuse reflection spectra were made. We firstly found that the competition of energy transfer from Ce ³⁺ to Eu ²⁺ and electron transfer from Ce ³⁺ to Eu ³⁺ existed in CeF₃ and EuF₃-co-doped BaY₂F₈ systems. The f-f transition emission of Eu ²⁺ was increased with increasing x in systems BaY₂F₈:0.03Ce, x Eu. Ce ⁴⁺ ions coexist with Ce ³⁺ ions and substitute Y ³⁺ for Ce ⁴⁺ in the systems BaY₂F₈:Eu, Ce.

Key words: Rare earth fluoride, Energy transfer, Electron transfer

CLC Number:

O616

TrendMD:

ZHANG Xian-Ming, SU Hai-Quan, YE Ze-Ren, JIA Zhi-Hong, ZANG Chun-Yu, SHI Chun-Shan . Energy Transfer from Ce^³⁺ to Eu^²⁺ and Electron Transfer from Ce^³⁺ to Eu^³⁺ in BaY₂F₈:Ce, Eu Systems[J]. Chem. J. Chinese Universities, 2001, 22(3): 358.

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Energy Transfer from Ce^³⁺ to Eu^²⁺ and Electron Transfer from Ce^³⁺ to Eu^³⁺ in BaY₂F₈:Ce, Eu Systems

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