Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5400189 | Journal of Luminescence | 2014 | 8 Pages |
Abstract
Pr3+-doped Lu3âxScxAl5O12 and Lu3âxInxAl5O12 (x=0, 0.025, 0.1, 0.25, 0.5, 0.75, 1, and 2) polycrystals are fabricated by the high-temperature solid state reaction method. Although X-ray excited luminescence measurements show that there is no positive contribution of Sc3+ or In3+ substitution on the scintillation efficiency, but the physical aspects of band-gap engineering such as the cooperative process of excitation and thermal ionization of 5d1 excited state are illustrated in this study. We employ a combination of optical diffuse reflectance, photoluminescence, decay kinetic, thermoluminescence experiments to reveal the influence of Sc3+ or In3+ substitution on electronic structure and luminescent properties in Pr3+-doped lutetium aluminate garnet.
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Authors
Yuntao Wu, Guoqing Zhang, Guohao Ren,