ORGANIC CHARGE TRANSPORT LAYER, ORGANIC EL DEVICE, ORGANIC SEMICONDUCTOR DEVICE, AND ORGANIC PHOTOELECTRIC DEVICE

摘要

The present invention pertains to an organic charge transport layer having a low refractive index, and to an organic EL device, an organic semiconductor device, and an organic photoelectric device which are provided with the organic charge transport layer. The present invention addresses the problem of providing an organic semiconductor thin film having a considerably reduced refractive index without impairing conductivity, by mixing a predetermined amount of an electret material into an organic semiconductor material. The organic charge transport layer according to the present invention is characterized by containing an organic semiconductor material and an electret material. It is preferable that the organic semiconductor material is a hole transport material and that the electret material has a refractive index of 1.5 or lower.