Patent ID: 11968885
Assignee: SUMITOMO CHEMICAL COMPANY LIMITED
Field: nan (nan)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method of manufacturing an organic photodetector, the method comprising:
depositing a first formulation on a substrate to form a first wet film over a cathode, wherein the cathode is coupled with the substrate and the first formulation comprises an organic electron donor and an organic electron acceptor dissolved in a first solvent or a first solvent mixture;
drying the first wet film to provide a photoactive layer comprising the organic electron donor and the organic electron acceptor;
depositing a second formulation onto the photoactive layer to form a second wet film, wherein the second formulation comprises an electron blocking compound dissolved in a second solvent or a second solvent mixture, wherein the second solvent or solvent mixture is configured to provide that the second solvent or solvent mixture does not dissolve the photoactive layer, and the electron blocking compound comprises a compound having a formula according to General Formula (I):

[M]a+[X]a−   (General Formula (I)), where M is a metal; X is CN, SCN, SeCN or TeCN; and a is at least 1;
drying the second wet film to provide the electron blocking layer;
forming the anode over the electron blocking layer;
drying the second wet film to provide an electron blocking layer comprising the electron blocking compound;
forming an anode over the electron blocking layer; and
connecting the organic photodetector to a voltage source configured to apply a reverse bias to the organic photodetector.