Tin selenide is primarily used in thermoelectric applications due to its excellent thermoelectric properties. It is a key material in converting waste heat into electrical energy, making it valuable in industries like automotive and manufacturing for improving energy efficiency. Additionally, it is utilized in photovoltaic devices for solar energy harvesting, enhancing the performance of solar cells. Its layered structure also makes it suitable for use in optoelectronic devices, such as photodetectors and light-emitting diodes. Furthermore, tin selenide is explored in research for potential applications in spintronics and as a component in advanced electronic and semiconductor technologies.