Used primarily in scintillation detectors for radiation measurement due to its high light output and good energy resolution, especially when doped with europium (SrI₂:Eu). It is effective in detecting gamma rays and X-rays in medical imaging, nuclear safeguards, and homeland security applications. Its performance surpasses many traditional scintillators in terms of energy resolution, making it suitable for precise spectroscopy. Additionally, it is studied for use in solid-state lighting and optoelectronic devices because of its luminescent properties.