色彩转换膜对白色有机电致发光光谱的影响  

Effects of White Organic Light-Emitting Devices Using Color Conversion Films on Electroluminescence Spectra

作　　者：侯庆传[1] 吴晓明[1] 华玉林[1] 齐青瑾[1] 李岚[1] 印寿根[1] 

机构地区：[1]天津理工大学材料科学与工程学院,天津市光电显示材料与器件重点实验室,显示材料与光电器件省部共建教育部重点实验室,天津300384

出　　处：《光谱学与光谱分析》2010年第6期1460-1463,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(60906022,60977035);天津市科委重点项目(06TXTJJC14603);天津市高校科技发展基金项目(20070805);天津市“材料物理与化学”重点学科项目资助

摘　　要：利用蓝色有机发光二极管激发荧光色彩转换膜的方法,制备了一种新型的白色有机电致发光器件。蓝色有机发光二极管的发光层采用4,4’-Bis(carbazol-9-yl)biphenyl(CBP)主体掺杂高效蓝色荧光染料N-(4-((E)-2-(6-((E)-4-(diphenylamino)styryl)naphthalen-2-yl)vinyl)phenyl)-N-phenylbenzenamine(N-BDAVBi)来制备。有机/无机复合色彩转换膜是将有机荧光颜料VQ-D25和无机荧光粉掺铈钇铝石榴石(YAG:Ce3+)按一定的重量比均匀分散到-[CH3CH2COOCH3]n-(PMMA)中来制备。获得了色稳定性较高的白色有机电致发光器件。当驱动电压由6升至14V时,器件光谱非常稳定且CIE色坐标仅从(0.354,0.304)变化到(0.357,0.312),其最高电流效率约为5.8cd.A-1(4.35mA.cm-2),最高亮度为16800cd.m-2(14V)。The authors report a novel white organic light-emitting device （WOLED）,which uses a strategy of exciting organic/inorganic color conversion film with a blue organic light-emitting diode （OLED）.The luminescent layer of the blue OLED was prepared by use of CBP host blended with a blue highly fluorescent dye N-BDAVBi.The organic/inorganic color conversion film was prepared by dispersing a mixture of red pigment VQ-D25 and YAG：Ce^3＋ phosphor in PMMA.The authors have achieved a novel WOLED with the high color stability by optimizing the thickness and fluorescent pigment concentration of the color conversion film.When the driving voltage varied between 6 and 14 V,the color coordinates （CIE） varied slightly from （0.354,0.304） to （0.357,0.312） and the maximum current efficiency is about 5.8 cd·A^-1（4.35 mA·cm^-2）,the maximum brightness is 16 800 cd·m^-2 at the operating voltage of 14 V.

关 键 词：有机电致发光 有机/无机复合色彩转换膜 白光 

分 类 号：O472.3[理学—半导体物理]