Terbium is widely used in various high-tech applications due to its unique properties. It is a key component in the production of green phosphors for color television tubes, LED lights, and fluorescent lamps, where it helps in achieving vibrant and efficient green hues.

In the field of solid-state devices, terbium is utilized in magneto-optical recording media, enhancing data storage and retrieval processes. Additionally, terbium-doped materials are employed in sensors and actuators, particularly in devices that require precise control and measurement of magnetic fields.

Its role in medical imaging is also significant, as terbium-based compounds are used in X-ray imaging screens to improve image clarity and resolution. Furthermore, terbium is instrumental in the development of advanced alloys and ceramics, contributing to the creation of materials with enhanced mechanical and thermal properties for specialized industrial applications.