Method for preparing lead halide semiconductor film from waste lead plaster

• Main Authors: LI LINHONG, JIA MING, LIU FANGYANG, MA QIMAN, LIU SILIANG, ZENG QIANG, JIANG LIANGXING, ZHANG ZONGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2023
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING

The invention discloses a method for preparing a lead halide semiconductor film from waste lead paste. The method comprises the following steps: A, thoroughly cleaning a substrate, and then drying the substrate; b, collecting part of lead plaster from the waste lead-acid battery, firstly, carrying out lead sulfate desulfurization reaction on the lead plaster by using a desulfurizing agent, then, adding a reducing agent to convert lead dioxide into lead oxide, and then, obtaining an acid solution containing divalent lead ions by adopting an organic acid leaching agent; and C, an acid solution containing divalent lead ions and a certain amount of halogen-containing acid or halogen-containing salt are deposited on the treated substrate together, then the substrate is placed on a heating stage for high-temperature annealing, a lead halide semiconductor film is obtained after annealing, and the lead halide semiconductor film is placed in a drying box to be dried. According to the method, the steps are simplified,