Structural and optical properties of Er3+-doped Y2Ti2O7 thin films by sol-gel method
Structural and optical properties of Er3+-doped Y2Ti2O7 thin films by sol-gel method
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DOI：
10.1016/j.tsf.2010.05.052
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发表时间：
2010-08
期刊：
影响因子：
2.1
通讯作者：
C. Ting;Chia-Wei Chang;L. Chuang;Chang-Hung Li;Yi-Shan Chiu
中科院分区：
文献类型：
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作者：
C. Ting;Chia-Wei Chang;L. Chuang;Chang-Hung Li;Yi-Shan Chiu
Er{sup 3+}-doped Y{sub 2}Ti{sub 2}O{sub 7} and Er{sub 2}Ti{sub 2}O{sub 7} thin films were fabricated by sol-gel spin-coating method. A well-defined pyrochlore phase Er{sub x}Y{sub 2-x}Ti{sub 2}O{sub 7} was observed while the annealing temperature exceeded 800 {sup o}C. The average transmittance of the Er{sub x}Y{sub 2-x}Ti{sub 2}O{sub 7} thin films annealed at 400 to 900 {sup o}C reduces from {approx} 87 to {approx} 77%. The refractive indices and optical band gaps of Er{sub x}Y{sub 2-x}Ti{sub 2}O{sub 7} (x = 0-2) annealed at 800 {sup o}C/1 h vary from 2.20 to 2.09 and 4.11 to 4.07 eV, respectively. The {approx} 1.53 {mu}m photoluminescence spectrum of Er{sup 3+} (5 mol%)-doped Y{sub 2}Ti{sub 2}O{sub 7} thin films annealed at 700 {sup o}C/1 h exhibits the maximum intensity and full-width at half maximum ({approx} 60 nm).
