A method for preparing photoactive perovskite materials. The method comprises the steps of: introducing a lead halide and a first solvent to a first vessel and contacting the lead halide with the first solvent to dissolve the lead halide to form a lead halide solution, introducing a Group 1 metal halide a second solvent into a second vessel and contacting the Group 1 metal halide with the second solvent to dissolve the Group 1 metal halide to form a Group 1 metal halide solution, and contacting the lead halide solution with the Group 1 metal halide solution to form a thin-film precursor ink. The method further comprises depositing the thin-film precursor ink onto a substrate, drying the thin-film precursor ink to form a thin film, annealing the thin film; and rinsing the thin film with a salt solution.

Provided is a charge-transporting composition for a perovskite photoelectric conversion element, the composition containing: a charge-transporting substance made of a conductive polymer; an organic silane compound; and a solvent.

An electrolyte additive containing a silyl-group compound useful for reducing battery resistance and improving high-temperature performance; an electrolyte containing the silyl-group compound additive; and an electrochemical energy storage device containing the electrolyte are disclosed.

Methods and systems of producing perovskite material, in which the nucleation and crystallization processes are decoupled and, hence, independently controlled resulting in highly uniform nucleation sites for subsequent crystallization of perovskites. Methods and systems for using perovskite material and mixed perovskite films for solar cells.

A wireless self-charging power pack including a solution processed conductive thin film integrating a solar cell with a solid-state supercapacitor. Additionally, a method of forming a wireless self-charging power pack including integrating a solar cell with a solid-state supercapacitor by forming a layer of conductive thin film between the solar cell and the solid-state supercapacitor through solution processing of the material forming the conductive thin film.

An inspection method for a multilayer semiconductor device is provided. The inspection method can investigate multilayered ensembles of a multilayer semiconductor device and obtain stratigraphic thickness (ST) maps of each layer in the multilayer semiconductor device by utilizing absorption edges of materials of interests and obtaining calibration quality curves.

The present disclosure provides a tandem, 4-terminal, silicon-perovskite solar device. The device may comprise a silicon solar cell having a first band gap; a glass sheet covering the silicon solar cell, wherein the glass sheet comprises a top surface and a bottom surface; and a perovskite solar cell having a second band gap, wherein the perovskite solar cell is deposited on the bottom surface of the glass sheet.

Provided is a perovskite solar cell including a substrate, a lower transparent electrode provided on the substrate, an upper transparent electrode provided on the lower transparent electrode, and a light absorption layer interposed between the lower transparent electrode and the upper transparent electrode, wherein the light absorption layer includes a perovskite material, and at least one of the lower transparent electrode or the upper transparent electrode includes a first color implementation layer, an intermediate layer, and a second color implementation layer, which are sequentially stacked, the first color implementation layer and the second color implementation layer each being a metal oxide layer containing a dopant.

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.

A method of concomitantly manufacturing at least two thin-film devices is provided, the method comprising: applying a solution on a first surface of a first planar substrate; positioning a second surface of a second planar substrate proximate to the first surface of the first planar substrate to provide parallelly disposed adjacent substrates, such that the first surface and the second surface are in contact with the solution; sliding the parallelly disposed adjacent substrates over one another such that the solution is drawn over the first surface and the second surface, which when the parallelly disposed adjacent substrates slide passed one another, provide a first coating on a first surface and a second coating on the second surface; and drying the first coating and the second coating, thereby concomitantly manufacturing at least two thin-film devices.