Antimony selenide (Sb₂Se₃) solar cell has been developed rapidly in re cent years due to its advantages of abundant raw materials,simple preparation, and stable structure.In this paper,antimony selenide photoelectric thin films were prepared by close space sublimation method,and the growth mechanism and pa rameters of antimony selenide were studied.The results show that the increase o f substrate temperature contributes to the crystallization of antimony selenide thin films.When the substrate temperature is 340℃,the thin film has high cry stallization ratio and dense surface morphology.On the other hand,the change o f evaporation distance can modulate the preferred orientation of antimony seleni de films.When the evaporation distance is 10mm,the thin film has an obvious ( 002) orientation,and the corresponding (Sb₄Se₆)n r ibbons grows perpendicular t o the substrate,so that the antimony selenide photo-absorption layer can have a n excellent carrier transport characteristics.Moreover,the optimized antimony s elenide thin film was applied to the solar cells,and the photoelectric conversi on efficiency of 5.78% was obtained by using the device structure of FTO/CdS/Sb ₂Se₃/P3HT/C,among which the open-circuit voltage was 0.375V,the short-circui t current density was 28.01mA/cm²,and the filling factor was 54.94%.The above r esearch provides a technical route for the optimal preparation of high-orientat i on antimony selenide solar cells and shows the research potential of antimony se lenide solar cells.