Enhanced quantum efficiency and thermal stability by crystal-field engineering in a Y(Ga,Al)3(BO3)4:Cr3+,Yb3+ phosphor for diverse short-wave infrared applications

In this work, a novel NIR phosphor YGa 1.8 Al 1.2 (BO 3 ) 4 :Cr 3+ was synthesized. By designing the Cr 3+ –Yb 3+ energy transfer, efficient SWIR luminescence with simultaneously high IQE, thermal stability and output power was achieved.