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中文摘要：
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-tet raphenylnapht hacene （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。
英文摘要：
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.
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