Mn<sup>4+</sup> Activated Deep Red Emitting Perovskite Type Phosphors for Horticulture Lighting

Red emitting Mn 4+ doped oxides are a promising class of materials to improve the colour rendering and luminous efficacy of phosphor-converted light-emitting diodes (pcLEDs). For pcLEDs, the optical properties are crucial w.r.t commercial acceptance. In this work, luminescence spectra and decay curves of Sr 2 YNbO 6 , Sr 2 YTaO 6 and Sr 2 LaNbO 6 have been recorded, other Mn 4+ doped phosphors show that quenching occurs through thermally...