Patent ID: 9722197
Date: 2017-08-01
CPC Classifications: H01L,Y02E,Y02P

Claim:
1. An inverted organic electronic device comprising: a first electrode formed on a substrate; a composite layer on the first electrode, wherein the composite layer comprises a mixture of a cathode interface material and a photoactive material, wherein a surface energy of the photoactive material is lower than a surface energy of the cathode interface material, wherein the cathode interface material comprises at least one selected from the group consisting of polyethyleneimine (PEI), polyallylamine (PAA) and polylysine (PLS), wherein the photoactive material comprises an electron acceptor and an electron donor, and has a bulk hetero-junction (BHJ) structure, and wherein the cathode interface material and the photo active material having low surface energy spontaneously form a bilayer through vertical phase separation while lowering work function of the first electrode by generating surface dipoles on a surface of the first electrode; an anode interface layer formed on the composite layer; and a second electrode formed on the anode interface layer.