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MZnP04:RE(M=Li,Na,K;RE=Eu3+,La3+,Ce3+)的高温固相合成及其发光性质
Fabrication and Luminecent Properties of MZnPO4:RE (M=Li, Na, K; RE=Eu3+,La3+,Ce3+) by Hign-tempetrature Solid-state Sytheses

作  者: ; ; ; ; ; ;

机构地区: 广西民族大学

出  处: 《纳米科技》 2014年第2期57-61,共5页

摘  要: 采用高温固相反应合成MZnP04:RE(M=Li,Na,K;RE=Eu3+,La3+,Ce3+),用XRD、SEM和EDS等方法对产物进行表征,对产物的发光性能进行研究,结果表明,掺杂三价稀土离子Eu3+,b3+,Ce3+没有改变MZnPO4(M=Li,Na,K)的晶体结构和颗粒形貌,在紫外光(260nm)激发下,Eu3+惨杂的MZnPO4:Eu3+(M=Li,Na,K)改变了MZnPO4(M=Li,Na,K)的发光波长,发射橙红色光,主峰位于595nm附近,为Eu3+的5D0→7F1跃迁发射;La3+,Ce3+掺杂的MZnP04:RE(M=Li,Na,K,RE=La3+,Ce3+)发射蓝色光,最高峰对应波长为400-500nm,没有改变MZnPO4(M=Li,Na,K)的发光波长,但提高了强度,La3+掺杂的强度大于Ce3+掺杂,非荧光稀土离子La3+作为添加剂提高基质材料的荧光性能,而Ce3+属于4F1→5D1的跃迁发射。 MZnPO4:RE (M=Li, Na, K; RE=Eu3+,La3+,Ce3+) were synthesized by high temperature solid-state reaction, and characterized by XRD,SEM, EDS. Their luminescent properties were investigated by using luminescence spectra. The results show that both crystal structure and particle morphology of MZnPO4 (M=Li, Na, K) have not changed after being doped with Eu3+,La3+,Ce3+. However, under the ultraviolet (260 urn) radiation, Eu3+ doped MZnPO4: Eu3+ (M=Li, Na, K) change the Luminescence wavelength of MZnPO4 (M=Li, Na, K) , and the emitted orange-red light showed a dominant peak at 595 nm attributed to the 5D0→7F1 transition of Eu3+. The blue light emitted by La3+,Ce3+ doped MZnPO4:RE (M= Li, Na, K, RE= La3+,Ce3+) showed a dominant peak at 400-500 nm without change the Luminescence wavelength of MZnPO4 (M=Li, Na, K) ,but the corresponding luminescence intensity is improved. The non-fluorescence rare earth ions La3+ as additives can increase the fluorescent properties of the substrate material, which was greatly enhanced than that of the 4F→5SD, transition of Ce3+.

关 键 词: 发光材料 磷酸锌钾 磷酸锌钠 磷酸锌锂

领  域: [理学]

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