Luminescence, Journal Year: 2023, Volume and Issue: 39(2)

Published: Dec. 26, 2023

Abstract The present study investigates the impact of ligand environment on luminescence and thermometric behavior Sm 3+ doped A 3 (PO 4 ) 2 (A = Sr, Ca) phosphors prepared by combustion synthesis. structural luminescent properties ions in phosphate lattices were investigated using powder X‐ray diffraction (PXRD) photoluminescence (PL) techniques. PXRD results synthesized exhibit expected phases that are agreement with their respective standards. Fourier‐transform infrared (FTIR) spectroscopy confirms presence PO vibrational bands. Upon excitation near ultraviolet light, PL studies indicated Sr :Sm a yellow light emission, whereas Ca an emission orange light. accordance CIE coordinates, showing coordinates (0.56, 0.44), displaying (0.60, 0.40). Thermal analysis shows improved stability based lower weight reduction thermogravimetric analysis. effect temperature phosphor has been examined upon 405 nm excitation. By fluorescence intensity ratio (FIR) method, responses ratios from : F 3/2 → 6 H 5/2 transition to G 7/2 9/2 emissions characterized. more sensitive as compared phosphors. earlier research findings strongly indicate these hold great promise ideal candidates for applications non‐invasive optical thermometry solid‐state lighting devices.

Language: Английский