3results about "Tin halides" patented technology

The present invention is a method for producing perovskite type quantum dots, wherein, using a plurality of precursor solutions each containing a different element, each of the plurality of precursor solutions is heated and sprayed as an aerosol of the precursor solution, and the plurality of aerosols are collided to cause a gas phase reaction, dropping in a solvent to synthesize core particles containing the different elements. This provides a method for producing quantum dots that enables control of the particle size and yields nanoparticles with a uniform particle size even in large-scale synthesis.

To suppress oxidation of Sn2+ to Sn4+ without requiring a new reductant agent, in a method of manufacturing a tin-based perovskite layer.SOLUTION: A method of manufacturing a tin-based perovskite layer includes: a first step of dissolving a tin-based perovskite compound in a solvent not containing dimethyl sulfoxide (DMSO) to prepare a first solution (L3); a third step of applying the first solution on a base material (S) after the first step; and a second step of mixing the DMSO (L2) to the first solution after the first step and at a predetermined time before the third step.SELECTED DRAWING: Figure 1

The application belongs to the field of new energy materials, and provides a preparation method of stannous iodide, which comprises the following steps: adding hydriodic acid into ultrapure water to configure a solution A; adding a tin source into pure water, and then adding an antioxidant to form a solution B; adding the solution A into the solution B, heating and reacting, and then adding a reaction catalyst, stirring, and obtaining an orange-red solid; separating the orange-red solid from a liquid, washing, and vacuum drying to obtain a crude stannous iodide; performing a first heating process on the crude stannous iodide to separate the stannous iodide from oxidized impurities; and then performing a second heating process to obtain stannous iodide for perovskite batteries through high-temperature purification; wherein the tin source contains divalent tin ions. The preparation method has mild reaction conditions, simple raw material acquisition and preservation, high reaction efficiency, and the prepared finished product has high quality and high purity and is not easy to be oxidized, and is used in narrow-bandgap perovskite solar cells and laminated solar cells, and the photoelectric conversion efficiency is significantly improved.