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基于锑磷酸盐玻璃宽带发射的钐离子荧光色彩调谐
作者:肖鹏 张伟针 张晶晶 王志强 林海 
单位:大连工业大学纺织与材料工程学院 辽宁 大连 116034 
关键词:锑磷酸盐玻璃 多色荧光 宽带发射 钐离子 荧光调谐 
分类号:O433
出版年,卷(期):页码:2016,44(6):841-846
DOI:10.14062/j.issn.0454-5648.2016.06.10
摘要:
利用高温熔融法制备不同Sm3+ 掺杂量的锑磷酸盐发光玻璃(SP玻璃)。结果表明:玻璃中未析出晶态物质,玻璃转变温度为430 ℃。在254 nm紫外光激发下,SP玻璃发出覆盖近紫外/蓝/绿/黄光谱区域Sb3+宽带发射,最大半高宽达150 nm。当Sm2O3含量从0增加到2.0%(质量分数)时,Sb3+宽发射带强度依次减弱,同时归属Sm3+ 的稀土特征荧光发射强度依次增强,发光色彩从蓝白色变为暖白色。在不同的激发条件下,Sm3+掺杂的SP玻璃展现出不同的发射行为,其中在240和315 nm波长激发下,玻璃的荧光色坐标接近标准白光点。200~320 nm紫外光可有效激发Sm3+掺杂的SP玻璃,获得高强度可见荧光。通过选择合适激发波长光源和优选Sm3+ 掺杂量,有望在Sm3+掺杂SP玻璃中获得强的多色荧光发射,实现理想白光荧光。
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A series of Sm3+ doped antimony phosphate luminescent glasses (SP glasses) were prepared via a melt-quenching method. The results show that no crystalline substance is precipitated in the glasses and the glass transition temperature is 430 ℃. Under 254 nm ultraviolet (UV) radiation, a broad emission of Sb3+ in SP glasses covers near-UV, blue, green and yellow spectral regions and the full width at half maximum (FWHM) is 150 nm. The intensity of broad emission from Sb3+ decreases while the intensity of the characteristic emissions from Sm3+ increases with increasing the Sm2O3 concentration from 0 to 2.0% (in mass fraction), resulting in that the luminescence color changes from blue-white to warm-white. Under different excitation conditions, Sm3+ doped SP glasses exhibit different fluorescences and the CIE chromaticity coordinates are closed to the standard pure-white values under 240 and 315 nm radiations. The excitation spectra indicate that Sm3+ doped SP glasses can be effectively excited under 200320 nm UV radiation, obtaining a high-intensity visible fluorescence. An intense multi-color fluorescence can be achieved at a suitable excitation wavelength and an optimized content of Sm3+, which favors the realization of ideal white irradiancy.
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基金项目:
辽宁省教育厅科学技术研究项目(L2014226);国家自然科学基金(61275057)资助。
作者简介:
肖 鹏(1992—),男,硕士研究生。
参考文献:
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