Used as a scintillation material in radiation detectors, especially when doped with europium (SrI₂:Eu). It efficiently converts ionizing radiation into visible light, offering high light yield and good energy resolution. This makes it suitable for portable and high-performance gamma-ray spectrometers used in nuclear security, environmental monitoring, and medical imaging. Its performance rivals that of more expensive materials like sodium iodide and lanthanum bromide. Additionally, it is studied for use in solid-state lighting and luminescent devices due to its favorable emission properties.