Patent ID: 8969856
Filing Date: 2015-03-03
Classification: H01L

Abstract:
1. An optoelectronic device comprising a substrate, an anode, a hole transport layer, an electron transport layer, a cathode, an electroluminescent layer; and a hole injecting layer comprising an organic matrix having a refractive index, and inorganic nanoparticles, wherein the concentration of the inorganic nanoparticles in the hole injecting layer is about 5% by weight to about 50% by weight and wherein the inorganic nanoparticles have bimodal particle size distribution of a first population and a second population dispersed in the organic matrix wherein each of the first population and second population of the inorganic nanoparticles has a refractive index of at least 0.1 greater than the refractive index of the organic matrix.