Novel 2D organic-inorganic hybrid perovskites, including (4-CF.sub.3-PMA).sub.2PbI.sub.4, that emit in the blue spectral region, and methods for making same. The CF.sub.3-substituted material exhibits a ˜0.16 eV larger bandgap than corresponding halogen-substituted materials. This family of materials offers a degree of freedom in tuning 2D perovskites to specific bandgaps for optoelectronic applications. These materials are highly stable, easily synthesized, and do not suffer from phase separation.

Provided are compounds of Formula I. Also provided are formulations comprising these compounds. Further provided are optoelectronic devices that utilize these compounds.

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Provided are compounds of Formula I. Also provided are formulations comprising these compounds. Further provided are optoelectronic devices that utilize these compounds.

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Provided are compounds of Formula I and Formula II. Also provided are formulations comprising these compounds. Further provided are optoelectronic devices that utilize these compounds.

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Provided are compounds of Formula I and Formula II. Also provided are formulations comprising these compounds. Further provided are optoelectronic devices that utilize these compounds.

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The present specification relates to a heterocyclic compound represented by Formula 1, an organic electronic device including the heterocyclic compound in an organic active layer, and a method for manufacturing the organic electronic device.

This invention relates to a formulation comprising p-type and n-type organic semiconductors and a solvent mixture comprising an aromatic hydrocarbon substituted with one or more substituents selected from alkyl and alkoxy groups and a unsubstituted or substituted benzothiazole, for example 2-methylbenzothiazole. The formulation may be used to form the photoactive layer (3) of a photosensitive organic electronic device, for example an organic photodetector, comprising an anode (2) a cathode (4) and the photoactive layer between the anode and the cathode.

To improve the quality of semiconductor films, to reduce the culling of finished products, the parameters of which do not meet the established requirements in the method of forming a semiconductor film of a perovskite-like material, a layer of a perovskite-like material or a precursor of a perovskite-like material of the predefined thickness is deposited on the substrate, followed by halogen layer until liquefaction of the layer, then the halogen is gradually removed from the substrate until it is completely removed, ensuring the gradual crystallization of the perovskite-like material on a substrate to form perovskite-like material grains larger than perovskite-like material grains of the original film.

Disclosed herein are organic photosensitive optoelectronic devices comprising two electrodes in superposed relation, a photoactive region located between the two electrodes, wherein the photoactive region comprises a donor mixture and an organic acceptor material, the donor mixture comprising at least one organic polymer donor material and at least one squaraine donor. Methods of fabricating the organic photosensitive optoelectronic devices are also disclosed.

Disclosed herein are organic photosensitive optoelectronic devices comprising two electrodes in superposed relation; a mixed photoactive layer located between the two electrodes, wherein the mixed photoactive layer comprises at least one donor material having a HOMO energy and at least one acceptor material having a LUMO energy, wherein the at least one donor material and the at least one acceptor material form a mixed donor-acceptor heterojunction; a photoactive layer adjacent to and interfacing with the mixed photoactive layer, wherein the photoactive layer comprises a material having a LUMO energy within 0.3 eV of the LUMO energy of the at least one acceptor material or a HOMO energy within 0.3 eV of the HOMO energy of the at least one donor material; and a buffer layer adjacent to and interfacing with the mixed photoactive layer.