To provide a composition for charge transport film that is formed uniformly, which is excellent in the preservation stability of composition, and which does not bring about any industrial problem when forming an organic thin film by a wet film-forming method, and also to provide an organic electroluminescent element with an organic layer formed by a wet film-forming method, which has a uniform light-emitting surface and a low voltage, and which prevents short circuit and a dark spot, and lengthen its driving life.
The composition for charge transport film contains an aromatic amine-based polymer, an electron acceptor compound, and an organic solvent, wherein the ratio of contained aggregates which have a particle size (2R) of the order of micron, is reduced by the light scattering measuring method.
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齊藤 知子
清水 渡
大泉 淳一
中井 敏光
