Cesium lead triiodide is primarily utilized in the field of optoelectronics, particularly in the development of perovskite solar cells. Its excellent light absorption properties and high charge carrier mobility make it a promising material for enhancing the efficiency of photovoltaic devices. Additionally, it is used in light-emitting diodes (LEDs) due to its ability to emit bright and pure colors, contributing to advancements in display technologies. The material is also explored in photodetectors, where its sensitivity to light enables the detection of a wide range of wavelengths, making it suitable for imaging and sensing applications.