Europium ingot is a rare earth metal used primarily in the production of phosphors for color displays, including CRT televisions, computer monitors, fluorescent lamps, and LED lighting. It enables red and blue emission due to its luminescent properties, providing sharp, realistic colors in screens and lighting.

Additionally, it is employed in anti-counterfeiting measures, such as security inks and UV-fluorescent tags for banknotes and sensitive documents, as it glows under ultraviolet light, making replication difficult.

In the nuclear industry, europium serves as a neutron absorber in control rods for reactors. It is also used in specialty electronics, including lasers and radiation detection systems.

Furthermore, in research and development, europium is applied in advanced materials for optoelectronics, solid-state devices, and biomedical applications, such as time-resolved fluorescence labeling for tracking biological reactions in medical and chemical research, owing to its long luminescence decay time for precise detection.