Enhanced NIR emission and thermal stability of La2MgSnO6:Mn4+,Ni2+via energy transfer†
Abstract
Near-infrared (NIR) phosphor materials are increasingly being recognized for their diverse functional applications. In this study, we investigate the enhancement of NIR emission and thermal stability in La2MgSnO6:Mn4+,Ni2+ through energy transfer mechanisms. Our findings reveal that co-doping La2MgSnO6 with Mn4+ significantly enhances Ni2+ absorption in the blue light region, markedly increases the NIR emission intensity, and improves thermal quenching performance. The newly developed La2MgSnO6:Mn4+,Ni2+ phosphors, when incorporated into NIR phosphor-converted LEDs (pc-LEDs), demonstrate significant potential for applications in night vision, information encryption, and vein imaging. This research paves a new path for enhancing the luminescent properties of Ni2+ and advancing high-performance NIR phosphors.