荧光染料超薄层对有机电致发光器件发光光谱的影响  

Influence of Fluorescent Dye Ultrathin Layer on Luminescence Spectra in Organic Light-Emitting Diodes

作　　者：于军胜[1] 李璐[1] 文雯[1] 黎威志[1] 蒋亚东[1] 

机构地区：[1]电子科技大学光电信息学院,电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《光谱学与光谱分析》2009年第8期2046-2049,共4页Spectroscopy and Spectral Analysis

基　　金：国家杰出青年基金项目(60425101);教育部新世纪优秀人才计划项目(NCET-06-0812);电子科技大学中青年学术带头人计划项目(060206)资助

摘　　要：采用在主体材料上蒸镀一层超薄层的方法,研究了三种有机小分子荧光染料dimethylquinacridon(DMQA)、4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethy ljulolidyl-9-enyl)-4-pyran(DCJTB)和5,6,11,12-tetraphenylnaphthacene(Rubrene)的浓度效应对有机电致发光器件(OLED)电致发光光谱的影响。结果表明,与常规掺杂器件相比,染料超薄层器件的光谱中出现了微弱的主体材料的发光峰,浓度猝灭现象更为明显。三种染料的浓度猝灭程度从高到低依次为DMQA、DCJTB和Rubrene。同时,我们使用此三种染料配制了溶液,测试了它们在不同浓度下的光致发光光谱强度,进一步探讨了掺杂剂浓度猝灭强弱与器件的发光光谱特性的关系。By using an ultrathin dopant dye layer deposited on the top of host materials, the influence of concentration of three fluorescent dyes, dimethylqninacridone （DMQA）, 4-（dieyanomethylene）-2-t-butyl-6-（ 1,1,7,7-tetramethyljulolidyl-9-enyl）-4H- pyran （DCJTB）, and 5,6,11,12-tetraphenylnaphthacene （rubrene）, on the luminescence spectra of OLEDs was studied. The characteristic of the brightness-efficiency-bias voltage performance was investigated. The results showed that compared to the conventional doping devices, the devices consisting of ultrathin dye layer exhibited a weak peak originating from host matrix, and the more obvious concentration quenching was existent. The degree of concentration quenching for the three ultrathin doping dyes from high to low is in the order of DMQA, DCJTB and rubrene. Meanwhile, the authors used the photoluminescence spectra of these three dopants dilute solution to testify the relationship between EL properties of OLEDs and concentration quenching of these dyes.

关 键 词：有机电致发光 掺杂染料 超薄层 浓度猝灭 发光光谱 

分 类 号：TN383.1[电子电信—物理电子学]