Growth And Photoelectric Detection Properties Of Inorganic Perovskite CsPbCl₃ Micron Single Crystal

In recent years,halide perovskite has attracted extensive attention due to its excellent pho-toelectric properties,and has shown great potential in the fields of solar cells,light-emitting diodes and photodetectors.Inorganic perovskites,such as Cs Pb X₃（x=Cl,Br,I）,have low synthesis cost,high quantum mobility,long carrier diffusion length,adjustable band gap and high optical absorption.Moreover,it has abundant raw material savings,low manufacturing cost,simple process,and can be prepared by low-cost liquid-phase method.Therefore,it has a very attractive prospect in the field of high-performance solar cells,light-emitting diodes and photodetectors.But now most of the research is only focused on the nanocrystals and quantum dots of materials,and few single crystal materials are measured to analyze the single crystal properties of materials.In this paper,the synthesis of single crystals by simple liquid phase method is studied in order to prepare high quality single crystals by simple and quick methods,and to characterize the single crystals and to explore some optical properties.Then,the single crystal is prepared into photoelectric detector and its performance is explored.In the first chapter,the background of perovskite is introduced,including the principle,application scope,advantages and disadvantages of the existing detectors,the advantages and disadvantages of the two mainstream UV detectors on the market,the synthesis methods of perovskite and the advantages and disadvantages of various methods.Finally,the application scope and research significance of perovskite are explained,and the research frontier status of perovskite is understood.In the second chapter,we understand the preparation of perovskite materials and the steps and methods,what kind of material characterization of perovskite itself needs to be done after perovskite is prepared by the method,and the specific and content of various characterization methods.Finally,the perovskite photoelectric measurement,to understand the measurement equipment,as well as the specific principle.In the third chapter,the results are discussed.Firstly,the structure of perovskite is analyzed,and then the photoelectric measurement is analyzed.The responsivity,rise and fall time and other data diagrams are mainly explained.Finally,the conclusion is expounded.In the fourth chapter,based on the previous growth methods of CsPbCl₃perovskite single crystal,we explored the growth methods of Cs Pb I₃nanowires and other perovskite materials,and studied their photoelectric properties.The fifth chapter mainly summarizes the paper,summarizes the innovation of the paper,and looks forward to the next work direction.