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White up-conversion luminescence in rare-earth-lon-doped YAlO3 nanocrystals

Lue, Wancong and Ma, Xinghua and Zhou, Han and Chen, Guitang and Li, Jianfu and Zhu, Zhaojie and You, Zhenyu and Tu, Chaoyang (2008) White up-conversion luminescence in rare-earth-lon-doped YAlO3 nanocrystals. JOURNAL OF PHYSICAL CHEMISTRY C, 112 (38). pp. 15071-15074.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp805205v

Abstract

Room-temperature bright white up-conversion (UC) luminescence in Yb3+/Er3+/Tm3+ ion-doped YAlO3 nanocrystals was achieved under diode laser excitation of 974.5 nm. The white light consists of the blue ((1)G(4) -> H-3(6) of Tm3+), green (H-2(11/2)/ S-4(3/2) -> I-4(15/2) of Er3+), and red ((1)G(4) -> F-3(4) of Tm3+ and I-4(15/2) -> I-4(15/2) of Er3+) UC emissions. The UC mechanisms were proposed based on spectral, pump power dependence and kinetic analyses. The white light may be a possible candidate for applications in the field of lighting, displays, and photonics.

Item Type:Article
Subjects:Material Science > Functional and hybrid materials
Physical Science > Photonics
Engineering > Nanotechnology applications in ICT
ID Code:1931
Deposited By:Farnush Anwar
Deposited On:16 Dec 2008 12:12
Last Modified:16 Dec 2008 12:12

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