Preparation method of guanidino lead halide perovskite single crystal and application of guanidino lead halide perovskite single crystal in photoelectric detector

• Main Authors: CHEN RUOTONG, FENG HONGJIAN, GUO NINGJIE, ZHANG LUDI
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMISTRY; CRYSTAL GROWTH; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; ORGANIC CHEMISTRY; PHYSICS; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; TESTING; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

The invention discloses a preparation method of a guanidino lead halide perovskite single crystal and an application of the guanidino lead halide perovskite single crystal in a photoelectric detector, and relates to a preparation method of a perovskite single crystal and an application of the perovskite single crystal. According to the invention, by using aminoguanidine cations (Ag < + >) as organic cations, a novel perovskite single crystal material with a suitable single crystal optical band gap and a high light absorption coefficient is obtained, and the perovskite single crystal material is applied to the field of visible light detection. The method comprises the following steps: 1, preparing a precursor solution; 2, preparing a perovskite single crystal; and 3, cleaning, drying and polishing. The guanidino lead halide perovskite single crystal is used for preparing a photoelectric detector. The guanidino lead halide perovskite single crystal prepared by the invention has excellent light absorption perfor