Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7840706 | Journal of Luminescence | 2018 | 4 Pages |
Abstract
(PrxY0.9La0.1)2O3 (x = 0.05, 1, 5) transparent ceramics were fabricated by conventional ceramic processing. The absorption, emission spectra excited by ultraviolet and X-ray as well as the excitation spectra have been investigated as a function of the Pr3+ concentration. The emission under ultraviolet excitation shows the ability of Pr3+ to downconvert ultraviolet light to blue emission. The strong excitation band at 430-520 nm is in good agreement with the emissions of InGaN blue chips (λem = 450-470 nm), which can be efficiently excited by the 470 nm light and generate bright red emission at around 630 nm. The radioluminescence spectra demonstrate the possible application of Pr3+: (Y0.9La0.1)2O3 in scintillator. In addition, the concentration quenching observed in the case of the P1 and P5 ceramics leads us to conclude that an optimum Pr3+ concentration to generate the best luminescence properties is achievable. Given overall luminescence properties, the low Pr3+ content (0.5 mol%) doped (Y0.9La0.1)2O3 transparent ceramic is a potential candidate for the applications in the ultraviolet-based and InGaN blue chip based white light-emitting diodes, as well as the scintillators.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Yan Sun, Qiuhong Yang, Hongqiang Wang, Xiaobo Jiang, Bingfeng Li, Zhifa Shi,