Enhancement of upconversion luminescence of YAlO3: Er3+ by Gd3+ doping
Chinese Optics Letters, Vol. 10, Issue 8, pp. 081602- (2012)
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Abstract
The upconversion luminescences of YAlO3:Er3+ phosphor co-doping with different Gd3+ concentrations are investigated under the excitation of 980- and 532-nm diode lasers. A near ultraviolet upconversion emission at 410 nm is observed in YAlO3 under 532-nm excitation. Moreover, the inactive Gd3+ ions can improve the upconversion intensity efficiently in a certain range of concentration. Under 980-nm excitation, the visible upconversion emissions at 546 and 646 nm are enhanced by about 10 and 8 times at the Gd3+ concentration of 40%, respectively. The upconversion emission at 410 nm under 532-nm excitation is also enhanced by 7 times. The substitution of Gd3+ ions for Y3+ sites changes the local symmetry of Er3+, leading to the improvement of upconversion efficiency.
© 2012 Chinese Optics Letters
OCIS Codes
(160.4670) Materials : Optical materials
(160.4760) Materials : Optical properties
(160.5690) Materials : Rare-earth-doped materials
ToC Category:
Materials
Citation
Zhenlong Li, Baoshu Wang, Licheng Xing, Shaolong Liu, Na Tan, Siguo Xiao, , and Jianwen Ding, "Enhancement of upconversion luminescence of YAlO3: Er3+ by Gd3+ doping," Chin. Opt. Lett. 10, 081602- (2012)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-10-8-081602
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