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发明公开
CN101859881A 电子传输材料、有机电致发光器件及其制备方法 有权 转让

电子传输材料、有机电致发光器件及其制备方法
摘要：
本发明提供了一种电子传输材料，由Li2CO3掺杂在1，3，5-三[(3-吡啶基)-3-苯基]苯中组成。本发明还提供了一种有机电致发光器件，包括：衬底；在所述衬底上有第一电极层；在所述第一电极层上有一层或多层有机电致发光层；在所述有机电致发光层上有电子注入传输层，所述电子注入传输层由Li2CO3掺杂的1，3，5-三[(3-吡啶基)-3-苯基]苯构成；在所述电子注入传输层上有第二电极层。本发明将Li2CO3掺杂在1，3，5-三[(3-吡啶基)-3-苯基]苯(TmPyPB)中，提高了TmPyPB的电子迁移率，降低了器件的工作电压，实现发光层中电子和空穴的浓度平衡，从而提高器件的性能和效率。
摘要（英）：

The invention provides an electronic transmission material formed by doping Li2CO3 in 1, 3, 5-tri-[(3-pyridyl)-3-phenyl] benzene. The invention also provides an organic electroluminescent device which comprises a substrate, a first electrode layer arranged on the substrate, one or more organic electroluminescent layers arranged on the first electrode layer, an electronic injection transmission layer arranged on the organic electroluminescent layers and a second electrode layer arranged on the electronic injection transmission layer, wherein the electronic injection transmission layer is prepared from the Li2CO3-doped 1, 3, 5-tri-[(3-pyridyl)-3-phenyl] benzene. In the invention, the Li2CO3 is doped in the 1, 3, 5-tri-[(3-pyridyl)-3-phenyl] benzene (TmPyPB) to improve the electron mobility of the TmPyPB, reduce the working voltage of the device and realize the concentration balance of electrons and cavities in the electroluminescent layers so that the performance and the efficiency of the device are improved.

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