Temperature dependence of structural and luminescent properties of Tb<sup>3+</sup> doped YPO<sub>4</sub>

Weihua Di; Xiaojun Wang; Baojiu Chen; Xiaoxia Zhao; Guzhong Ren; Qingyu Meng; Yanmin Yang; Huasheng Lai; Shaozhe LÜ

doi:10.1117/12.667380

26 January 2006 Temperature dependence of structural and luminescent properties of Tb³⁺ doped YPO₄

Weihua Di, Xiaojun Wang, Baojiu Chen, Xiaoxia Zhao, Guzhong Ren, Qingyu Meng, Yanmin Yang, Huasheng Lai, Shaozhe LÜ

Proceedings Volume 6030, ICO20: Display Devices and Systems; 60300M (2006) https://doi.org/10.1117/12.667380
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

The solution precipitation is used to synthesize the Tb doped yttrium phosphates. The as-synthesized is the monoclinic phased YPO₄×2H₂O with churchite-type structure, which is transformed to the tetragonal phased YPO₄ with xenotime-type structure as the temperature approaches 200°C during the thermal treatment process. This phase transformation process can not be observed in some routes that need a higher synthetic temperature, in which, only a high-temperature phase is obtained. The luminescent efficiency dependence on the heat-treatment temperature is investigated. The luminescent efficiency presents a two-step increase respectively around 300 and 700°C. Results indicate that the significant increase of luminescent efficiency at 300°C is not related to the phase structure transformation, but to the decrease of OH- ions content, and that the significant increase of luminescent efficiency at 700°C is related to the increase of crystallinity, which may increase the absorption to VUV light.

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Weihua Di, Xiaojun Wang, Baojiu Chen, Xiaoxia Zhao, Guzhong Ren, Qingyu Meng, Yanmin Yang, Huasheng Lai, and Shaozhe LÜ "Temperature dependence of structural and luminescent properties of Tb³⁺ doped YPO₄", Proc. SPIE 6030, ICO20: Display Devices and Systems, 60300M (26 January 2006); https://doi.org/10.1117/12.667380

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