有机白光LED光转换膜的荧光光谱  

Fluorescence Spectrum of Organic Light Transform Films

作　　者：杨爱玲[1] 王晶[1] 王进[1] 徐炳明[1] 郑荣儿[1] 孟继武[1] 

机构地区：[1]中国海洋大学光学光电子实验室,山东青岛266071

出　　处：《光电子．激光》2005年第1期17-20,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(10074012);青岛市科技局资助项目(02 2 KJ YJ 26)

摘　　要：以AB胶(AB)及线性低密度聚乙烯(POLY)为分散系,将诺丹明6G(POLY)、核黄素(L)及溴甲酚紫(BCP)染料以不同浓度分散在其中,用热熔法制备了光转换膜,测量了它们在460nm及500nm激发下的荧光光谱。以POLY为分散系的膜荧光强度比以AB为分散系的膜低,AB是较好的分散系。L、R及AB质量比为1∶1∶103的膜有机光转换膜在500nm光激发下发出的荧光与剩余绿光的合成光偏橙黄色;L、R、BCP及AB质量比为1∶1∶1∶104的有机光转换膜在460nm光激发下发出的荧光与剩余绿光的合成光偏蓝白;L、R、BCP及AB质量比为1∶1∶1∶104的有机光转换膜在500nm光激发下发出的荧光与剩余绿光的合成光与白炽灯颜色接近。以氙灯为光源照射荧光膜,其荧光强度在1h内保持不变。AB glue (AB) and polyethylene (POLY) were disperse systems, in which Rhodamine 6G (R), lactoflavin (L) and 2,9-dimethyl,4,4-diphenyl,1,10-phenanthroline (BCP) were dispersed with different concentrations. A heat-melt method was used to prepare organic light transform films. Excited at 460 nm and 500 nm, fluorescence spectrums of these films were measured. The results show that, the fluorescence intensity of AB glue disperse system is higher than that of POLY system. When the mass ratio of R, L and AB is 1:1:103 and the excited wavelength 500 nm, the blending light from this film and the surplus excited source is partial to orange and yellow color. When the mass ratio R, L, BCP and AB is 1:1:1:104 and excited wavelength 460 nm, the blending light is partial to blue white. But when the mass ratio of R, L, BCP and AB is 1:1:1:104 and excited at 500 nm, the blending light is approximate to the incandescent lamp. Using xenon lamp to illuminate these films, their fluorescence intensities don't change in one hour. This organic light transform film can be used to capsulate white light emitting devices.

关 键 词：光转换 白光LED 光激 绿光 氙灯 荧光光谱 光源 AB 溴甲酚紫 分散 

分 类 号：TN312.8[电子电信—物理电子学] O641[理学—物理化学]