Photoluminescence Study Of Ce3+ Activated Blue Emitting Lisio3:Ce3+ Lamp Phosphors

Abstract

Because of the spectroscopic properties of Ce³⁺ with favorable response and the ability to integrate the Ce³⁺ ion into diverse host inorgnaic material which was activated with cerium ion cover transformed interest for most of the applications . Therefore, with the suport of outstanding luminescence properties, inorganic materials activated with Ce³⁺ ions are applied in lightings industries, detectors with display systems for ionizing radiation .Here synthesis and photoluminescence (PL) investigation of LiSiO₃:Ce³⁺  carried out using combustion synthesis method. The structural and morphological studies and confirmation of phase and purity were done using XRD and SEM. PL spectra of Ce³⁺  due to the 4f–5d transition of Ce³⁺ ions peaking at 332 nm. The photoluminescence emission spectra of LiSiO₃:Ce³⁺ phosphor exhibit blue emission band centered at 440 nm. Usually, configuration of  Ce³⁺ ion in ground state is divide into two levels viz., ²F_5/2 and ²F _7/2 whereas the 5d¹ excited configuration is divide by the crystal playing field ranging from 2 to 5 components