Achieving the performance luminescence of LaMg0.5Sn0.5O3:Cr3+ by [In3+-Sc3+] co-substitution [Mg2+-Sn4+] and its application to the biodetection and night vision lighting

Abstract

The exploration of performance luminescence near-infrared (NIR) material is crucial for rapidly developing NIR spectroscopic techniques. Herein, the NIR LaMg0.5Sn0.5O3:Cr3+ phosphor was synthesized by a high temperature solid-state method. And its luminescence performance were improved by [In3+-Sc3+] substituting for [Mg2+-Sn4+]. The half-peak width can be expanded to 211 nm, the emission intensity can reach the seven times of that un-substitution, and the emission intensity at 423 K was maintained at 60 % of that at room temperature, moreover, the internal quantum efficiency can reach 54.2 %. On this basis, the phosphor converted light emitting diodes (pc-LEDs) were achieved by combining La(Mg1-xSn1-xInxScx)0.5O3:Cr3+ with blue LED, importantly, it can be applied to the biodetection and night vision lighting, which indicate its application value.