Frequency Up-conversion Luminescence Properties and Mechanism of Tm~(3+) /Er~(3+)/Yb~(3+) Co-doped O

• 作 者: 胡曰博 周大利
• 机 构: School of Materials Science and Engineering,Sichuan University,School of Materials Science and Engin
• 出 处: Journal of Wuhan University of Technology(Materials Science
• 发表日期: 2011年03期
• 关键词: glasses excitation emissions doping luminescence tuned transitions bands visible

Oxyfluoride glasses were developed with composition 60GeO 2 ·10AlF 3 ·25BaF 2 ·(1.95-x)GdF 3 · 3YbF 3 ·0.05TmF 3 ·xErF 3 (x=0.02,0.05,0.08,0.11,0.14,0.17)in mole percent.Intense blue(476 nm),green(524 and 546 nm)and red(658 nm)emissions which identified from the 1G 4 →3H 6 transition of Tm3+and the(2H 11/2 ,4S 3/2 )→4I 15/2 ,4F 9/2 →4I 15/2 transitions of Er3+,respectively,were simultaneously observed under 980 nm excitation at room temperature.The results show that multicolor luminescence including white light can be adjustably tuned by changing doping concentrations of Er3+ion or the excitation power.In addition,the energy transfer processes among Tm3+,Er3+and Yb3+ions,and up-conversion mechanisms are discussed.

Oxyfluoride glasses were developed with composition 60 GeO 2 · 10AlF 3 · 25BaF 2 · (1.95-x) GdF 3 · 3YbF 3 · 0.05TmF 3 · xErF 3 (x = 0.02,0.05,0.08,0.11,0.14,0.17) in mole percent . Intense blue (476 nm), green (524 and 546 nm) and red (658 nm) emissions which identified from the 1G 4 → 3H 6 transition of Tm3 + and the (2H 11/2, 4S 3/2) → 4I 15/2, 4F 9/2 → 4I 15/2 transitions of Er3 +, respectively, respectively were observed at 980 nm excitation at room temperature. The results show that multicolor luminescence including white light can be adjustably tuned by changing doping concentrations of Er3 + ion or the excitation power. In addition, the energy transfer processes among Tm3 +, Er3 + and Yb3 + ions, and up-conversion mechanisms are discussed.