Cesium lead tribromide is widely used in optoelectronic devices due to its excellent light absorption and emission properties. It is a key material in perovskite solar cells, enhancing their efficiency and stability. Additionally, it is utilized in light-emitting diodes (LEDs) to produce bright and pure colors, making it valuable in display technologies. Its ability to form high-quality thin films also makes it suitable for photodetectors and other semiconductor applications.