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张永明,宋国轶,曹启华,于磊,赵丽.Eu³⁺掺杂GdPO₄微晶玻璃的制备及其发光特性的研究[J].光电子激光,2014,(6):1124~1128

Eu³⁺掺杂GdPO₄微晶玻璃的制备及其发光特性的研究

Preparation and luminescence properties of Eu³⁺ doped GdPO_4glass ceramic

投稿时间：2013-11-13

DOI：

中文关键词: Eu3＋:GdPO₄ 微晶玻璃发光

英文关键词:Eu3＋:GdPO₄ glass ceramic luminescence

基金项目:辽宁省教育厅科学技术研究(L2011063)资助项目 (沈阳化工大学材料科学与工程学院,辽宁沈阳110142)

作者	单位
张永明	沈阳化工大学材料科学与工程学院,辽宁沈阳110142
宋国轶	沈阳化工大学材料科学与工程学院,辽宁沈阳110142
曹启华	沈阳化工大学材料科学与工程学院,辽宁沈阳110142
于磊	沈阳化工大学材料科学与工程学院,辽宁沈阳110142
赵丽	沈阳化工大学材料科学与工程学院,辽宁沈阳110142

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中文摘要:

采用高温熔融法,制备了摩尔组分为53P₂O₅- 16BaO-9Na₂O-7K₂O-14.25Gd₂O₃- 0.75Eu₂O₃系统基质玻璃,熔化温度为1400℃,经过热处理后获得微晶玻璃。采用X射线衍射(XRD)、扫描电镜(SEM)和荧光光谱,对微晶玻璃的结构、形貌和发光性能进行研究。XRD结果表明,基质玻璃经过700℃热处理2h得到Eu³⁺ 掺杂GdPO₄微晶玻璃,其晶粒尺寸分别约为39nm；荧光光谱研究结果表明,与基质玻璃相比,微晶玻璃的激发强度和发射强度明显增强,微晶玻璃中源自Eu³⁺的 ⁷F₀-⁵L₆跃迁强度与电荷迁移带强度的比值降低,发射峰出现明显劈裂,且⁵D₀-⁷F₂与⁵D₀-⁷F₁跃迁强度的比值减小,表明Eu³⁺成功地进入了GdPO₄晶相中。微晶玻璃中,E u³⁺发射强度和激发强度随着热处理温度的升高而增强。

英文摘要:

The precursor glasses with the molar composition of 53P₂O₅-16BaO-9Na ₂O-7K₂O-14.25Gd₂O₃-0.75Eu₂O_3were prepared by high temperature m elting method,the melting temperature is 1400℃,and glass-ceramics are obtained by heat treatmen t.Their structural,morphology and luminescence properties are investigated by X-ray diffraction (XRD),scann ing electron microscopy (SEM) and luminescence spectrum.The results of XRD indicate that the glass ceramics containing Eu:GdPO_4can be obtained by heat treating the precursor glasses,an d the average crystallite sizes are 39nm and 55nm for glass ceramics prepared at 700℃ and 800℃ for 2h, respectively.The results of luminescence spectrum show that the emission and exc itation intensities of the glass ceramics are improved obviously,the relative intensiti es ratio of ⁷F₀-⁵L₆ transition to charge transfer band of O2－-Eu³⁺ decreases,the Stark splitting emission peaks are observed for glass ceramics,and relative intensities ratio of ⁵D 0-⁷F₂/⁵D₀-⁷F₁ decreases compared with that of precursor glass.All these demonstrate that the Eu³⁺ i ons are incorporated into GdPO_4nanocrystal phase.The emission and excitation intensities of glass ceramics increase with the heat treatment temperature increasing.

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