Regulation of red to near-infrared emission in Mn2+ single doped magnesium zinc phosphate solid-solution phosphors by modification of the crystal field

The different Mg/Zn ratios of (Mg_1−xZn_x)_2.97(PO₄)₂:0.03Mn²⁺ result in various PL intensities and spectra profiles, which are related to the crystal field strength and local environment of the Mn²⁺ ions.