铋掺杂铝硅酸盐玻璃的超宽带近红外发光性质  

ULTRA BROADBAND NEAR INFRARED EMISSION PROPERTIES OF BISMUTH DOPED Al_2O_3-MgO-SiO_2 GLASSES

作　　者：尚吉花[1] 杨正文[1] 刘志亮[1] 宋志国[1] 周大成[1] 尹兆益[1] 竺侃[1] 邱建备[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093

出　　处：《硅酸盐学报》2010年第11期2129-2132,共4页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50772045);云南省自然科学重点基金(2009CC009);教育部博士点基金(200806740004)资助项目

摘　　要：采用高温熔融法制备了组分为50SiO_2-xAl_2O_3-(50-x)MgO-Bi_2O_3(x=5,10,15,20,摩尔比)的铋掺杂铝硅酸盐玻璃。研究了铋掺杂铝硅酸盐玻璃超宽带近红外发光性质,探讨了玻璃基质的光学碱度对铋离子宽带发光特性的影响。结果表明:在690nm和808nm的激发下,铋掺杂铝硅酸盐玻璃的红外荧光中心分别位于1106nm和1294nm;随光学碱度的增强,铋离子的红外发光强度减弱。并对铋离子超宽带发光的机理进行了探讨,认为其红外发光源于低价的Bi^+和Bi^(2+)。The Bi-doped aluminosilicate glasses with molar composition of 50SiO2-xAl2O3-（50-x）MgO-1Bi2O3（x=5,10,15,20） were prepared by conventional melting-quenching technique.The broadband infrared（IR） luminescence properties of the glasses were studied.IR fluorescence centered at 1106 nm and 1 294 nm was observed under 690 and 808 nm excitation,respectively.The influence of optical basicity of the glass host on broadband infrared fluorescence was investigated.The intensity of the IR fluorescence decreased with the increase of the optical basicity of glass host.It is revealed that the IR luminescence is due to low valence state bismuth ions Bi~＋and Bi^（2＋）.

关 键 词：光学性质 铋掺杂铝硅酸盐玻璃 红外发光 光学碱度 

分 类 号：TQ171[化学工程—玻璃工业]