Anomalous photoluminescence from K2LiInF6:Mn4+ phosphor
A novel red emitting fluoride phosphor K2LiInF6:Mn4+ was synthesized by a cation exchange route. Despite its structural and morphological similarity with our previously reported materials (K2LiAlF6:Mn4+ and K2LiGaF6:Mn4+), an increased blue shift in its emission spectrum was observed. This anomalous phenomenon can be attributed to the nephelauxetic effect and the different interionic distances between the cations and ligands. Dependence of the Mn4+ emission intensity on its concentration was investigated to optimize the luminescent properties of the prepared phosphors and the structure and morphology of the phosphor is studied in detail.
- This article is part of the themed collection: Journal of Materials Chemistry C HOT Papers