Structural and spectroscopic properties of Ca2La3(SiO4)3F: Dy3+ phosphor

Abstract

This article reports the structural characterization and luminescence study of Ca₂La₃(SiO₄)₃F:Dy³⁺ synthesized by solid state reaction (SSR) route. It belongs to hexagonal system with space group \(P{6}_{3}/m\). SEM and EDAX study confirm formation of micro-crystalline powder and pure phase formation. The phosphor exhibits well intense peak around 573 nm attributed to electronic transition ⁴F_9/2 → ⁶H_13/2 along with other weak emission peaks when excited at 386 nm. Yellow-green emission is confirmed by the CIE chromatic coordinate diagram. This phosphor thus finds applications in solid state lighting, display devices and other optical applications.