Research progress on the preparation method of two-dimensional bismuth oxyselenide materials
Bismuth oxyselenide is an emerging two-dimensional semiconductor material that has the characteristics of high carrier mobility,excellent thermal and chemical stability and good mechanical flexibility.It has broad application prospects in optoelectronics,energy storage and other fields.However,at present,the synthesis of two-dimensional bismuth oxyselenide films generally adopts bottom-up or top-down methods.The acquisition of two-dimensional bismuth oxyselenide single crystals with large size and atomic thickness and the efficient transfer of films are still key issues that need to be further studied in the preparation process.This paper reviews the preparation methods of two-dimensional bismuth oxyselenide materials at home and abroad.Meanwhile,it also discusses the advantages and disadvantages of each method and the improvements from the aspects of precursors and reaction conditions,so as to provide a reference for the efficient and controllable preparation of high-performance bismuth oxyselenide materials with specific morphology and sizes in the future.
bismuth oxyselenidetwo-dimensional materialsgrowth regulationultrathin single crystalprep-aration method