Synthesis and luminescence properties of Ce3+ doped (Sr, Ba)2GeO4 phosphors

Cerium (Ce3+) doped strontium, barium orthogermanate samples are prepared by conventional solid state mixing method. In this process, X-ray powder diffraction (XRD), Field emission scanning electron microscopy (FESEM), Energy-dispersive X-ray spectroscopy (EDAX) and Photoluminescence (PL) measurements are carried out for the synthesized phosphors. The orthorhombic structure is confirmed by Xray diffraction of the phosphors. EDAX is confirmed that all the elements are present in the compound such as Sr, Ba, Ge, O and Ce. Photoluminescence studies of Sr2GeO4: Ce3+ and Ba2GeO4: Ce3+ phosphors show intense blue emissions at 438 and 429 nm under ultraviolet excitation respectively. These phosphors are ascribed due to the 5d ? 2F5/2, 2F7/2 electronic transitions of cerium ions. Therefore, these phosphors may be applicable in the display devices and lamp industry as blue emitting phosphors. (c) 2021 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the Global Conference on Recent Advances in Sustainable Materials 2021.