铝硅酸盐玻璃中铋离子的宽带近红外发光性质研究

来源 :第七届中国功能玻璃学术研讨会暨新型光电子材料国际论坛 | 被引量 : 0次 | 上传用户:wsj1234567
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  采用高温熔融—淬冷法制备了铋掺杂铝硅酸盐玻璃,利用拉曼光谱和红外光谱表征了玻璃的网络结构,并使用荧光光谱仪研究了玻璃在470nm,700nm和808nm激发下的近红外发光性质。随着玻璃中硅铝比的减少,玻璃网络逐渐增强。在不同泵浦光的激发下,玻璃的近红外发光都随硅铝比降低发生先增强后降低的变化趋势。随着玻璃中金土金属离子半径的增大,对玻璃的断网作用增强,玻璃的近红外发光峰逐渐发生红移。并结合样品在1176nm和1340nm的激发光谱,确定了铋掺杂铝硅酸盐玻璃的宽带近红外发光来自2种不同类型的铋离子发光中心,讨论了铝硅比对玻璃中不同类型铋离子发光中心形成的影响。
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