| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5402437 | Journal of Luminescence | 2010 | 4 Pages |
Abstract
We have investigated the effect of fluorhydric acid (HF) treatment on the photoluminescence (PL) properties of SrTiO3:Pr3+ powders prepared by sol-gel method. The red emission intensity increased significantly up to 18 times when the powders were subjected into a water-diluted 5% HF solution for 10Â min. The origin of the PL enhancement was ascribed to the increase of oxygen vacancies in HF-treated SrTiO3:Pr3+ powders. This study also manifested that HF etching is more effective to improve the red PL intensity than vacuum-annealing for the sol-gel made SrTiO3:Pr3+ powders.
Keywords
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Xiuxian He, Renqing Guo, Wen Dong, Fengang Zheng, Liang Fang, Mingrong Shen,