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Influence of Yb3+ co-doping on Er3+ up-conversion emission in NaYF4:Er3+ phosphor under 808 nm excitation

LINGLING JIANG1, HUABING ZHANG1, SIGUO XIAO1,2,* , XIANGLIANG YANG1,2, JIANWEN DING1,2

Affiliation

  1. Institute for Nanophysics and Rare-earth Luminescence, Xiangtan University, Xiangtan 411105, Hunan, China
  2. Key Laboratory of Low Dimensional Materials & Application Technology, Xiangtan University, Xiangtan, Hunan 411105, P.R. China

Abstract

Intense green and red emissions are observed in Er3+ singly-doped and Er3+/Yb3+-codoped NaYF4 phosphors under 808nm excitation. Co-doped Yb3+ ions reduce Er3+ up-conversion emission at low Er3+ doping concentration, while they enhance the up-conversion emission at relatively high Er3+ concentration. A competitive energy transfer mechanism between Yb3+ → Er3+ and Er3+ → Yb3+ is proposed to explain the Yb3+ dependent Er3+ up-conversion behavior..

Keywords

Er3+, Yb3+, Up-conversion, Energy transfer.

Citation

LINGLING JIANG, HUABING ZHANG, SIGUO XIAO, XIANGLIANG YANG, JIANWEN DING, Influence of Yb3+ co-doping on Er3+ up-conversion emission in NaYF4:Er3+ phosphor under 808 nm excitation, Optoelectronics and Advanced Materials - Rapid Communications, 6, 5-6, May-June 2012, pp.547-550 (2012).

Submitted at: Feb. 21, 2012

Accepted at: June 6, 2012