Photon down-shifting by energy transfer from Sm3+ to Eu3+ ions in sol-gel SiO2-LaF3 nano-glass-ceramics for photovoltaics

被引：13

作者：

Velazquez, J. J. ^{[1
]}

Rodriguez, V. D. ^{[1
]}

Yanes, A. C. ^{[2
]}

del Castillo, J. ^{[2
]}

Mendez-Ramos, J. ^{[1
]}

机构：

[1] Univ La Laguna, Dept Fis Fundamental & Expt Elect & Sistemas, Tenerife 38206, Spain

[2] Univ La Laguna, Dept Fis Basica, Tenerife 38206, Spain

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2012年 / 108卷 / 03期

关键词：

OPTICAL-PROPERTIES; STRUCTURAL EVOLUTION; UP-CONVERSION; LUMINESCENCE; ENHANCEMENT; PERFORMANCE; SPECTRUM;

D O I：

10.1007/s00340-012-4950-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

95SiO(2)-5LaF(3) sol-gel derived nano-glass-ceramics single doped with Eu3+ or Sm3+ and codoped with both of them were successfully obtained. XRD measurements confirm the precipitation of LaF3 nanocrystals after the ceramming process, with mean size ranging from 10 to 20 nm which increases with the thermal treatment temperature. The incorporation of rare-earth ions into precipitated LaF3 nanocrystals was confirmed from luminescence spectra. Intense yellow-red emissions were detected under UV and blue light excitation in single and codoped samples. The effect of codoping with Eu3+ and Sm3+ ions and the energy transfer mechanism between them have been analyzed in order to increase the yellow-red emissions.

引用

页码：577 / 583

页数：7

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