Effect of tartaric acid on the microstructure and photoluminescence of SrTiO₃:Pr³⁺ phosphors prepared by a sol–gel method

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• 作者：Xiuxian He ; Wen Dong ; Fengang Zheng ; Liang Fang ; Mingrong Shen
• 关键词：SrTiO₃ ; Pr³⁺ nanoparticles ; Tartaric acid ; Photoluminescence
• 刊名：Materials Chemistry and Physics
• 出版年：2010
• 出版时间：1 September 2010
• 年：2010
• 卷：123
• 期：1
• 页码：284-288
• 全文大小：807 K

文摘

We reported in this study that a chelating agent, tartaric acid, can contribute to the formation of pure phase during the preparation of the SrTiO₃:Pr³⁺ nanoparticles by a simple sol–gel method. The effects of the tartaric acid concentration, annealing temperature and Al³⁺ ion doping concentration on the microstructure and photoluminescence of the SrTiO₃:Pr³⁺ nanoparticles were investigated in detail. It was found that even a small amount of tartaric acid could lead to the formation of pure phase SrTiO₃, while the highest red emission of Pr³⁺ ions happened at a molar ratio 2:1 of tartaric acid to the metal ions Sr²⁺ and Ti⁴⁺, an Al³⁺ ion doping concentration of 2 % , and an annealing temperature of 1000 °C.