Abstract:
The present invention relates to a method for preparing a perovskite compound usable as a light absorber of a solar cell, and provides a method for preparing a light absorber of a solar cell in which the crystallinity of a perovskite compound is increased, resulting in an increase in the stability and efficiency of the solar cell.
Abstract:
A method of synthesizing a mixed-halide perovskite is disclosed herein. The method includes the steps of mixing a first single-halide perovskite and a second single-halide perovskite to form a solid phase mixture and heating the solid phase mixture at a temperature below a first decomposition temperature of the first single-halide perovskite and below a second decomposition temperature of the second single-halide perovskite for a time sufficient to form the mixed-halide perovskite. During the mixing, the first and second single-halide perovskite are both in the solid phase. A mixed-halide perovskite made according to the method is also disclosed herein. The mixed-halide perovskite is free of amorphous and/or semicrystalline phases. The mixed-halide perovskite can be utilized in a photovoltaic cell in a solar panel.
Abstract:
There is provided a photovoltaic device that comprises a front electrode, a back electrode, and disposed between the front electrode and the back electrode, an electron transporter region comprising an electron transporter layer; a hole transporter region comprising a hole transporter layer, and a layer of perovskite semiconductor disposed between and in contact with the electron transporter layer and the hole transporter layer. The electron transporter region is nearest to the front electrode and the hole transporter region is nearest to the back electrode, and the electron transporter layer comprises any of a chalcogenide material and an organic material and has a thickness of at least 2 nm.
Abstract:
The present invention relates to a semiconductor composition comprising an inorganic semiconducting material and an organic binder. The present invention further relates to an electronic device comprising a semiconducting layer consisting of such semiconductor composition.
Abstract:
An object of the present invention is to provide a solar cell that is excellent in photoelectric conversion efficiency, suffers little degradation during encapsulation (initial degradation), and has high-temperature durability. The present invention provides a solar cell including: a laminate having an electrode, a counter electrode, and a photoelectric conversion layer disposed between the electrode and the counter electrode; and an encapsulation resin layer covering the counter electrode to encapsulate the laminate, the photoelectric conversion layer including an organic-inorganic perovskite compound represented by the formula: R-M-X3, R representing an organic molecule, M representing a metal atom, X representing a halogen atom or a chalcogen atom, the encapsulation resin layer including a resin having a solubility parameter, i.e., a SP value, of 10 or less.
Abstract:
The invention discloses a perovskite solar cell and a method of fabrication thereof. The perovskite solar cell sequentially comprises a transparent electrode, a mesoporous P-I-N framework and a counter electrode from the bottom to top; the mesoporous P-I-N framework is composed of an n-type semiconductor layer, an insulating layer, and a p-type semiconductor layer in a sequentially stacked mode, and the n-type semiconductor layer, the insulating layer and the p-type semiconductor layer all comprise mesopores filled with a perovskite material. The preparation method sequentially includes preparing the mesoporous P-I-N framework on a transparent conductive substrate through a spin-coating method or a screen printing method, filling with the perovskite material and preparing the counter electrode layer.
Abstract:
An ink that can form a P-type layer in an organic electronic device. The ink includes at least nanoparticles of P-type semiconductor metal oxide(s) selected from among V2O5, NiO, MoO3, WO3 and mixtures thereof and an ionomer, the ionomer being a perfluorosulfonate copolymer, the mass ratio between the ionomer and the nanoparticles of P-type semiconductor metal oxide(s) selected from among V2O5, NiO, MoO3, WO3 and mixtures thereof being between 0.005 and 0.115. Also, a P layer of an organic electronic device, an electronic device and the formation method thereof.
Abstract:
A highly efficient multi junction photovoltaic device, such as a two, three, or four junction device, is disclosed. The multi-junction device may include a first subcell comprising a first photoactive region and a second subcell comprising a second photoactive region. The first and second photoactive regions are designed to minimize spectral overlap and maximize photocurrent across a broad absorption spectra, such as wavelengths ranging from 400 nm to 900 nm. The device may further include an inter-connecting layer, disposed between the first subcell and the second subcell, that is at least substantially transparent. By introducing a transparent interconnecting layer, a dual element (tandem) cell achieves a power conversion efficiency of 10.0±0.5%. By adding an additional (3rd) sub-cell that absorbs at the second order optical interference maximum within the stack. The triple junction cell significantly improves the quantum efficiency at shorter wavelengths, achieving a power conversion efficiency of 11.1±0.5%. Adding additional sub-cells has been shown to increase power conversion efficiency above 12%.
Abstract:
In one aspect, an apparatus for converting light having a first wavelength to a light having a second wavelength is provided. The apparatus includes an interband light detector configured to detect light with the first wavelength, a light emitting device configured to emit light with the second wavelength, and a connector connecting the light detector to the light emitting device. In another aspect, an apparatus includes an absorber layer configured to absorb light having a first wavelength, a barrier and trap layer adjacent the absorber layer, an injector layer adjacent the barrier and trap layer, and an emitting device configured to emit light having a second wavelength. In a further aspect, a method is provided and includes absorbing an input light having a first wavelength, converting the first wavelength to a second wavelength different in size than the first wavelength, and emitting an output light having the second wavelength.
Abstract:
A method for preparing photoactive perovskite materials. The method comprises the step of preparing a lead halide precursor ink. Preparing a lead halide precursor ink comprises the steps of: introducing a lead halide into a vessel, introducing a first solvent to the vessel, and contacting the lead halide with the first solvent to dissolve the lead halide. The method further comprises depositing the lead halide precursor ink onto a substrate, drying the lead halide precursor ink to form a thin film, annealing the thin film, and rinsing the thin film with a second solvent and a salt.