The present invention relates to a method for manufacturing a conductive polymer thin-film having a semiconductor property and to a thin-film transistor including a conductive polymer thin-film having a semiconductor property. The method for manufacturing a conductive polymer thin-film having a semiconductor property includes exposing at least a portion of a conductive polymer thin-film to a surface treatment agent to reduce a charge density of the exposed at least a portion of the conductive polymer thin-film.

Inverse temperature crystallization processes are provided to produce perovskite single crystals (PSCs), as well as surface passivation techniques for producing stabilizing the PSCs in the bulk region. Stable hybrid perovskite material include a bulk region comprising a single crystal perovskite material having a first bandgap and a smooth perovskite surface layer having a second bandgap greater than the first bandgap. Devices for detection and energy conversion are also contemplated, including for spectroscopic photon and elementary particle detection, such as radiation detectors. Crystallization chambers for forming the PSCs are also provided.

A modified perovskite quantum dot material, a fabricating method thereof, and a display device are provided. Hydroxyl-modified perovskite quantum dots are obtained by adding an excess amount of hydroxyl-containing surface ligands to a solution of synthesized perovskite quantum dots. After high-speed centrifugation, the obtained perovskite quantum dots are redispersed into a non-polar alkyl solvent to form a solution. Further, an excess amount of ethyl orthosilicate is added to the solution, and after exposing the solution for a long period of time, the ethyl orthosilicate is hydrolyzed to form a triethoxysilane group. After centrifugation, modified perovskite quantum dots wrapped by the triethoxysilane groups are obtained, which effectively improves stability of the perovskite quantum dots.

Provided are a photoelectric conversion element that can generate power with high efficiency and has high durability, and a method for manufacturing the same.

A photoelectric conversion element according to an embodiment includes a first electrode, an active layer having a perovskite structure containing a halogen ion, and a second electrode having light transmissivity, in which a Warburg coefficient of the active layer measured by an AC impedance spectroscopy method is specified. The element can be manufactured by applying a solution containing a precursor of the perovskite structure and then performing appropriate annealing treatment or gas blowing.

The present invention relates to formulations for the preparation of organic electronic devices which comprise at least one specific A/JV-dialkylaniline and at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earths, lanthanides and actinides.

An aspect of the present disclosure is a method that includes applying a solution that includes a first solvent, a halogen-containing precursor, and a metal halide to a substrate to form a coating of the solution on the substrate, contacting the coating with a second solvent to form a first plurality of organo-metal halide perovskite crystals on the substrate, and thermally treating the first plurality of organo-metal halide perovskite crystals, such that at least a portion of the first plurality of organo-metal halide perovskite crystals is converted to a second plurality of organo-metal halide perovskite crystals on the substrate. The halogen-containing precursor and the metal halide are present in the solution at a molar ratio of the halogen-containing precursor to the metal halide between about 1.01:1.0 and about 2.0:1.0, and a property of the second plurality of organo-metal halide perovskite crystals is improved relative to a property of the first plurality of organo-metal halide perovskite crystals.

An organic light-emitting display device and a method of fabricating the same are provided. The organic light emitting display device according to an example comprises a substrate including a pixel region including a plurality of red-subpixels, a plurality of green-subpixels, and a plurality of blue-subpixels, and a dummy pixel region including a plurality of dummy subpixels; a plurality of first bank layers disposed in the pixel region in a first direction and a second direction to define a plurality of subpixels; a plurality of second bank layers disposed on the first bank layers in the first direction in the pixel region to partition boundaries between a red-subpixel column, a green-subpixel column, and a blue-subpixel column; and an organic light-emitting element formed on each of the subpixels; and wherein at least one dummy subpixel forms a first dispensing region onto which an organic light-emitting material is dispensed.

This invention relates to porous perovskite photoactive films, and more particularly, to porous perovskite films containing microgels. The present invention also relates to processes for the preparation of these films and to their use in perovskite solar cells.

A light emitting device includes a first electrode, a second electrode, and an emissive layer between the first and second electrodes. The emissive layer comprises quantum dots that are capable of producing circularly polarized luminescence. The quantum dots are chiral structured perovskite quantum dots, each comprising a core having a chiral crystal structure.

Provided is a light-emitting diode and a method for preparing the same. The light-emitting diode includes an anode, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode stacked in sequence, in which the perovskite light-emitting layer includes a first sublayer and a second sublayer stacked in sequence, with a material for forming the first sublayer including an inorganic perovskite material, and with a material for forming the second sublayer being an organic perovskite material.