Indium selenide is widely used in the field of optoelectronics due to its excellent semiconductor properties. It is a key material in the production of solar cells, where it helps in efficiently converting sunlight into electricity. Its ability to absorb a broad spectrum of light makes it suitable for photovoltaic applications, enhancing the performance of thin-film solar panels.

In addition to solar cells, indium selenide is utilized in the fabrication of photodetectors and light-emitting diodes (LEDs). Its high sensitivity to light and ability to emit light at specific wavelengths make it ideal for these devices, which are essential in various communication and display technologies.

The compound also finds applications in thermoelectric devices, where it helps in converting waste heat into electrical energy. Its unique thermal and electrical conductivity properties make it a promising material for improving the efficiency of thermoelectric generators.

Furthermore, indium selenide is being explored in the development of advanced batteries, particularly in solid-state batteries, due to its ionic conductivity and stability. This could lead to safer and more efficient energy storage solutions.

Overall, indium selenide plays a crucial role in advancing technologies related to energy conversion, storage, and optoelectronic devices, contributing significantly to the development of sustainable and efficient systems.