Vol. 7, Issue 1, Part A (2025)

In this paper, SrAl₂O₄:Eu²⁺ (europium doped strontium aluminate) phosphors were synthesized using a combustion synthesis method with urea as a fuel at 400-600 °C. The crystal structure, particle size, color emitted and elemental analysis were studied using X-ray diffractometry (XRD), CIE and Fourier transform infrared (FTIR) spectra. The FTIR spectra confirm the elements present in the SrAl₂O₄:Eu²⁺ phosphor. A broad emission band can be seen in the emission spectrum of the Eu²⁺ doped SrAl₂O₄ sample. A peak around 500 nm is associated with the 4f⁶5d¹–4f⁷ transition. The optical properties of SrAl₂O₄:Eu²⁺ phosphors were investigated by photoluminescence (PL). The excitation and emission spectra showed a wavelength peak at 337 and 515 nm, respectively. The CIE color chromaticity confirm that the SrAl₂O₄:Eu²⁺ phosphor emitted green colored light. Europioum-doped strontium aluminate is used as indicators, as they emit light when exposed by light. They also useful for fabricating mechano-optical nanodevices.