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发明公开
CN103682138A 一种有机电致发光器件及其制备方法 无效 - 撤回

一种有机电致发光器件及其制备方法
摘要：
本发明提供一种有机电致发光器件及其制备方法，该有机电致发光器件包括依次层叠的导电阳极基底、空穴注入层、空穴传输层、发光层、电子传输层、电子注入层和金属阴极，所述电子注入层的材质为n型材料和硝酸盐掺杂入电子注入材料中形成的混合材料，所述电子注入材料为Bphen、BCP、BAlq、Alq3、TAZ或TPBI，所述n型材料的掺杂质量分数为25～35%，所述硝酸盐的掺杂质量分数为1～10%。本发明的有机电致发光器件的电子注入层掺杂硝酸盐，使电子注入层的功函数与金属阴极相匹配，提高电子注入效率，促进电子传输与空穴传输的平衡，使发光效率提高，且制备方法简单，成本低，应用前景广阔。
摘要（英）：

The invention provides an organic electroluminescent device and a preparation method thereof. The organic electroluminescent device comprises a conductive anode substrate, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and a metal cathode which are sequentially stacked, wherein the electron injection layer is made of hybrid material formed by doping n-type material and nitrate in electron injection material, the electron injection material is Bphen, BCP, BAlq, Alq3, TAZ or TPBI, the doping mass fraction of the n-type material is 25-35%, and the doping mass fraction of nitrate is 1-10%. The electron injection layer of the organic electroluminescent device of the invention is doped with nitrate, which makes the work function of the electron injection layer matched with the metal cathode, improves the electron injection efficiency, promotes balance between electron transport and hole transport and improves the luminous efficiency. The organic electroluminescent device is simple in preparation method and low in cost and has wide application prospects.

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