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发明授权
CN101079472B 白色有机电致发光器件及其制备方法 有权 转让

白色有机电致发光器件及其制备方法
摘要：
本发明提供了一种白色有机电致发光(EL)器件，其包括含有第一聚合物发光层和第二聚合物发光层的多个聚合物发光层，这两者采用湿法在第一电极和第二电极之间形成，其中第一聚合物发光层的最高已占分子轨道(HOMO)能级为5.0～5.4eV，且第二聚合物发光层的HOMO能级高于第一聚合物发光层的HOMO能级。该多个聚合物发光层通过将红色发光层和蓝色发光层，或者红色发光层、绿色发光层、和蓝色发光层组合而发出白色光。使用该多个聚合物发光层，不管电压改变，白色有机EL器件都实现稳定的色纯度，且使得容易地控制色移。
摘要（英）：

The invention provides a white organic electroluminescence (EL) device, comprising a plurality of polymer luminescence layers which are provided with a first polymer luminescence layer and a second polymer luminescence layer. The first polymer luminescence layer and the second polymer luminescence layer are formed between a first electrode and a second electrode by a wet method; wherein, the first polymer luminescence layer occupies a molecular orbital (HOMO) energy level of 5.0-5.4eV most; furthermore, the HOMO energy level of the second polymer luminescence layer is higher than the HOMO energy level of the first polymer luminescence layer. The polymer luminescence layers emit white light by combining a red luminescence layer and a blue luminescence layer, or the red luminescence layer, a green luminescence layer and the blue luminescence layer. When the polymer luminescence layers are in use, even though the voltage is changed, the white organic EL device can realize stable color purity, and the color shift can be easily controlled.

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