White up-conversion luminescence power and efficiency in Yb(3+)-, Er(3+)- and Tm(3+)-doped BaIn6Y2O13.
White up-conversion luminescence power and efficiency in Yb(3+)-, Er(3+)- and Tm(3+)-doped BaIn6Y2O13.
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DOI：
10.1039/c4dt02312a
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发表时间：
2015-01
影响因子：
4
通讯作者：
Jiao Zhang;Yanmin Yang;Chao Mi;Yanzhou Liu;Fang Yu;Xiaohong Li;Y. Mai
中科院分区：
文献类型：
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作者：
Jiao Zhang;Yanmin Yang;Chao Mi;Yanzhou Liu;Fang Yu;Xiaohong Li;Y. Mai
用溶胶凝胶法成功地合成了不同掺杂浓度的BaIn6Y2O13：Yb(3+)，Er(3+)，Tm(3+)荧光粉。为了获得高效的白光发光样品，制备了三掺杂和双相样品。随后，我们系统地研究了样品的上转换发光(UCL)性质与掺杂浓度和激发密度的关系。得到了不同掺杂浓度样品在不同激发功率密度下的上转换(UC)白光发射功率和效率。当激发密度降至17.5W cm(-2)时，白光UCL效率最高可达0.38%。更重要的是，我们证明了效率较高的UC材料并不一定具有更强的发射功率，而发射功率是最重要的参数。最大发射功率可达1.23 mW。此外，还研究了温度对白色UCL的影响，并将BaIn6Y2O13样品掺杂到聚甲基丙烯酸甲酯(PMMA)中，制备了可发出白光的透明聚合物复合材料。
A series of BaIn6Y2O13:Yb(3+), Er(3+), Tm(3+) phosphors with different dopant concentrations have been successfully synthesized by a sol-gel method. In order to obtain efficient white light emitting samples, tri-doped and biphasic samples were prepared. Afterwards, we carried out a systematic study on the up-conversion luminescence (UCL) properties of the samples as functions of doping concentrations and excitation densities. The up-conversion (UC) white light emission powers and efficiencies of samples with different dopant concentrations at different excitation power densities were obtained. The highest white UCL efficiency of up to 0.38% was achieved at excitation densities down to 17.5 W cm(-2) in the biphasic samples. More importantly, we demonstrated that the UC materials with higher efficiency do not necessarily have stronger emission power, and the emission power is the most important parameter. A maximum emission power of up to 1.23 mW was obtained. Furthermore, the impact of temperature on the white UCL was studied, and transparent polymer composites that can emit white light were synthesized by doping BaIn6Y2O13 samples into polymethylmethacrylate (PMMA).