Temperature dependence of structural and luminescent properties of Tb 3+ doped YPO4

Weihua Di, Xiaojun Wang, Baojiu Chen, Xiaoxia Zhao, Guozhong Ren, Qingyu Meng, Yanmin Yang, Huasheng Lai, L. Ü Shaozhe

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

The solution precipitation is used to synthesize the Tb doped yttrium phosphates. The as-synthesized is the monoclinic phased YPO 4·2H2O with churchite-type structure, which is transformed to the tetragonal phased YPO4 with xenotime-rype 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.

Original languageEnglish
Article number60300M
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6030
DOIs
StatePublished - 2006
EventICO20: Display Devices and Systems - Changchun, China
Duration: Aug 21 2005Aug 26 2005

Keywords

  • Luminescence
  • Oh group
  • Plasma display panel
  • Structure transformation
  • Tb
  • Vacuum ultraviolet

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