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CaWO_4∶Eu^(3+),Tb^(3+)白色荧光粉的制备及其发光性能 被引量:6

Preparation of CaWO_4∶Eu^(3+),Tb^(3+) white phosphor and its luminescent property
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摘要 在不添加助剂的条件下,用微波共沉淀法法制备了铕、铽(Eu^(3+)、Tb^(3+))共掺杂的钨酸钙(CaWO_4)荧光粉。利用X射线衍射(XRD)、场发射扫描电子显微镜(SEM)、荧光光谱(PL)等表征手段,对荧光粉的物相组成、形貌和发光性能进行了分析。研究了Eu^(3+)、Tb^(3+)的掺杂比例及总掺杂量、反应温度及反应物浓度对荧光性能的影响。结果表明,Eu^(3+)、Tb^(3+)的掺杂摩尔比例、总掺杂量、温度以及反应物浓度对荧光粉的发光性能均能产生影响,其中在温度为80℃、反应物浓度为0.12mol/L且Eu^(3+)和Tb^(3+)总物质的量比金属离子总物质的量为13.1%时,得到的Eu^(3+)、Tb^(3+)共掺荧光粉在256nm激发下发射光谱色坐标为(0.270,0.236),位冷白光区。 Europium and terbium(Eu^(3+),Tb^(3+))co-doped CaWO4 phosphors were prepared by microwave co-precipitation method without adding auxiliaries.The phase composition,morphology and luminescent properties of phosphors were characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(SEM)and fluorescence spectroscopy(PL).The effects of Eu^(3+) and Tb^(3+) doping ratios,total doping amount,reaction temperature and reactant concentration on the fluorescence properties were investigated.The results showed that when the temperature of 80℃,the reaction concentration 0.12mol/L and Eu^(3+) and Tb^(3+) total amounts was 13.1% of total amount of metal ions,the spectral coordinates of Eu^(3+) and Tb^(3+) co-doped phosphors were(0.270,0.236) excited by microwave of 256 nm and at the cold-white region.
出处 《化工新型材料》 CAS CSCD 北大核心 2017年第8期104-106,共3页 New Chemical Materials
基金 新疆维吾尔自治区高校科研计划重点项目(XJEDU2016I044) 自治区研究生科研创新项目(XJGRI2016137)
关键词 CaWO4∶Eu3+、Tb3+ 冷白光 发光性能 微波共沉淀法 CaWO4∶Eu3+ Tb3+ cool white light luminous property microwave coprecipitation method
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