申请人:Konica Minolta, Inc.
公开号:EP2760059A1
公开(公告)日:2014-07-30
This organic electroluminescent element has, on a substrate (1), a positive electrode (2) and a negative electrode (8) that are paired electrodes, and at least one light-emitting layer (5). The light-emitting layer (5) contains at least one of each of a dopant and a host. The light-emitting layer (5) is formed by means of a coating method using a coating liquid comprising at least one solvent and has at least one peak in the distribution curve that is of the number frequency distribution of multimolecular aggregates formed from the dopant molecule and/or the host molecule and that is obtained from x-ray small-angle scattering. The smallest particle size value of the particle size values in the peak top is no greater than 4 nm.
这种有机电致发光元件在基板(1)上具有成对的正极(2)和负极(8),以及至少一个发光层(5)。发光层(5)包含掺杂剂和宿主中的至少一种。发光层(5)是通过使用包含至少一种溶剂的涂布液的涂布方法形成的,在分布曲线中至少有一个峰值,该峰值是由掺杂剂分子和/或宿主分子形成的多分子聚集体的数量频率分布,是通过 X 射线小角散射获得的。峰顶中粒径值的最小粒径值不大于4纳米。