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Tm3+/Yb3+共掺碲铅锌镧玻璃的能量传递和上转换发光

金 哲 聂秋华 徐铁峰 戴世勋 沈 祥 章向华

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Tm3+/Yb3+共掺碲铅锌镧玻璃的能量传递和上转换发光

金 哲, 聂秋华, 徐铁峰, 戴世勋, 沈 祥, 章向华

Energy transfer and upconversion luminescence of Tm3+/Yb3+ co-doped lanthanum-zinc-lead-tellurite glasses

Jin Zhe, Nie Qiu-Hua, Xu Tie-Feng, Dai Shi-Xun, Shen Xiang, Zhang Xiang-Hua
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  • 制备了Tm3+/Yb3+共掺TeO2-PbO-ZnO-La2O3玻璃,研究了玻璃红外吸收光谱和980 nm激光抽运下上转换发光光谱,分析了上转换发光机制.基于Tm3+和Yb3+的能级图及上转换机制建立了速率方程,得出了稀土离子各能级的粒子数分布密度以及Tm3+与Yb3+之间的能量转移系数Cbi(i=0, 1,3).结果表明,随着PbO加入,Yb3+:2F5/2与Tm3+:3H4间的能量转移不断增加,上转换蓝光的发光强度明显增强.
    Tm3+/Yb3+ codoped lanthanum-zinc-lead-tellurite glasses were prepared. Infrared spectrum and upconversion luminescence spectra under 980 nm excitation were studied, and the upconversion luminescence mechanisms were discussed. Rate equations based on energy levels of Tm3+ and Yb3+ and the upconversion mechanisms were developed, and population density in different levels and coefficients of the energy transfer rate Cbi(i=0, 1,3) between Tm3+ and Yb3+ were obtained. The results indicated that, with increasing PbO content in the glass, the energy transfer between Yb3+:2F5/2 and Tm3+:3H4 was intensified, and upconversion luminescence intensity of blue emission was enhanced significantly.
    • 基金项目: 浙江省自然科学基金(批准号:Y104498)和浙江省科技攻关计划(批准号:2005C31014,2006C21082)资助的课题.
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  • 文章访问数:  7371
  • PDF下载量:  1047
  • 被引次数: 0
出版历程
  • 收稿日期:  2006-06-29
  • 修回日期:  2006-12-26
  • 刊出日期:  2007-02-05

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