步入21世纪以来，人类社会高速发展，对能源的需求不断扩大，环境问题也越

Since entering the 21st century, human society has developed rapidly, the demand for energy has continued to expand, and environmental problems have become more and more serious. Stannous sulfide is an important multifunctional material with great application potential due to its low cost, non-toxicity and abundant raw materials. <br>Tin sulfide is very suitable as a light-absorbing layer in solar cells. Due to its direct band gap of 1.2 ev~1.52 ev and indirect band gap of 1.0 ev~1.1 ev, it has high photoelectric conversion efficiency for sunlight and is a prospect. Very good solar cell material. Because of its structural similarity to antimony sulfide, it is also used as a replacement material for antimony sulfide. In addition, stannous sulfide also has catalytic properties and is used as a catalyst in the synthesis of carbon oxysulfide and the polymerization of hydrocarbons. <br>This article reviews methods for preparing SnS. Different methods for synthesizing SnS powder and SnS thin films have obvious differences in morphology and properties. The difference between SnS thin films and SnS single crystal materials may be large, especially polycrystalline thin films. This article also reviews the progress in optoelectronic research of SnS. SnS can be made in a variety of ways, but producing high-quality thin-film photovoltaic materials still faces many challenges. <br>This review will help promote further research on SnS and its application in photovoltaic devices.

Since entering the 21st century, with the rapid development of human society, the demand for energy has been continuously expanding, and environmental problems have become increasingly serious. Tin sulfide is an important multifunctional material with the characteristics of low cost, non-toxicity, and abundant raw materials, which has great potential for application.<br>Tin sulfide is very suitable as a light absorbing layer in solar cells. Due to its direct bandgap of 1.2 ev to 1.52 ev and indirect bandgap of 1.0 ev to 1.1 ev, it has high photoelectric conversion efficiency for sunlight and is a promising solar cell material. Because it has a similar structure to antimony sulfide, it is also used as a replacement material for antimony sulfide. In addition, stannous sulfide also has catalytic properties and is used as a catalyst for the synthesis of oxygen sulfide carbon and the polymerization of hydrocarbons.<br>This article reviews the methods for preparing SnS. Different methods for synthesizing SnS powders and SnS thin films exhibit significant differences in morphology and properties. There may be significant differences between SnS thin films and SnS single crystal materials, especially polycrystalline thin films. This article also reviews the progress of optoelectronic research on SnS. SnS can be made in various ways, but producing high-quality thin film photovoltaic materials still faces many challenges.<br>This review helps to promote further research on SnS and its application in photovoltaic devices.

Since the 21st century, with the rapid development of human society, the demand for energy is expanding, and the environmental problems are becoming more and more serious. Stannous sulfide is an important multifunctional material, which has great application potential because of its low cost, non-toxicity and rich raw materials.<br> Stannous sulfide is very suitable as a light absorption layer in solar cells. Because of its direct band gap of 1.2 ev~1.52 ev and indirect band gap of 1.0 ev~1.1 ev, it has high photoelectric conversion efficiency for sunlight and is a very promising solar cell material. Because it is similar to antimony sulfide in structure, it is also used as an alternative material for antimony sulfide. In addition, stannous sulfide also has catalytic performance, and is used as a catalyst for carbon oxysulfide synthesis and hydrocarbon polymerization.<br> In this paper, the preparation methods of SnS are reviewed. The morphology and properties of SnS powders and SnS films synthesized by different methods are obviously different, and the differences between SnS films and SnS single crystal materials may be great, especially polycrystalline films. This paper also summarizes the photoelectric research progress of SnS. SnS can be made in many ways, but the production of high-quality thin-film photovoltaic materials still faces many challenges.<br> This review is helpful to promote the further research of SnS and its application in photovoltaic devices.