Abstract:
The present disclosure relates to organic photosensitive devices comprising a substrate; a first electrode disposed over the substrate; a second electrode disposed over the first electrode; a photoactive region positioned between the first electrode and the second electrode; and at least one reflector disposed over the second electrode, wherein the at least one reflector is configured to at least partially reflect one or more desired wavelengths. Also disclosed are methods of preparing photosensitive devices having at least one reflector configured to at least partially reflect one or more desired wavelengths.
Abstract:
Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).
Abstract:
A photosensitive device includes a plurality of organic photoconductive materials disposed in a stack between a first electrode and a second electrode, including a first continuous layer of donor host material, a second continuous layer of acceptor host material, and at least one other organic photoconductive material disposed as a plurality of discontinuous islands between the first continuous layer and the second continuous layer. Each of these other photoconductive materials has an absorption spectra different from the donor host material and the acceptor host material. Preferably, each of the discontinuous islands consists essentially of a crystallite of the respective organic photoconductive material, and more preferably, the crystallites are nanocrystals.
Abstract:
A compound having a surface region of highly negative electrostatic potential, which comprises a ligand L A represented by the structures below may be used in organic electroluminescent devices (OLEDs) and consumer products. Transition metal complexes comprising the ligand La may promote molecular alignment of dopants in OLEDs.
Abstract:
Provided are compounds of Formula I. Also provided are formulations comprising these compounds. Further provided are optoelectronic devices that utilize these compounds.
Abstract:
This disclosure relates, at least in part, an organic light emitting device, which in some embodiments comprises an anode (115); a cathode (160); a first emissive layer (135) disposed between the anode and the cathode, the first emissive layer comprising an electron transporting compound and a phosphorescent emissive dopant compound; and wherein the phosphorescent emissive dopant compound has a concentration gradient, in the emissive layer, which varies from the cathode side of the first emissive layer to the anode side of the emissive layer.
Abstract:
Doping metal oxide charge transport material with an organic molecule lowers electrical resistance while maintaining transparency and thus is optimal for use as charge transport materials in various organic optoelectronic devices such as organic photovoltaic devices and organic light emitting devices.