Infrared-to-visible up-conversion emissions and thermometric applications of Er3+-doped Al2O3
作者： B. Dong , X.S. Xu , X.J. Wang , T. Yang , Y.Y. He
DOI: 10.1007/S00340-007-2770-Z
关键词:
摘要: Er3+- doped Al2O3 has been prepared by a sol - gel method, using aluminium isopropoxide [ Al( OC3H7) 3]- derived sols with addition of erbium nitrate Er( NO3) 3 center dot 5H(2)O]. The phase structure theta-( Al, Er) O-2(3) was obtained for the 0.1 mol.% at sintering temperature 1273 K. green and red up- conversion emissions centered about 523, 545 660 nm, corresponding respectively to H-2(11/2) S-4(3/2) ->. I-4(15/2) F-4(9/2) transitions Er3+, were detected 978- nm semiconductor laser diode excitation. dependence studied over wide range 295 725 K, reasonable agreement between calculated temperatures fluorescence intensity ratio theory measured obtained, which proved that good potential development high- sensors. It some advantages compared glasses due its higher thermal mechanical resistance allows measurements in large range.
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