Exploring high-performance broadband near-infrared(NIR)emitting materials is crucial for the development of NIR devices.In this study,Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):Cr^(3+)and rare earth ion Pr^(3+)co-doped Ca_(...Exploring high-performance broadband near-infrared(NIR)emitting materials is crucial for the development of NIR devices.In this study,Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):Cr^(3+)and rare earth ion Pr^(3+)co-doped Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):Pr^(3+),Cr^(3+)phosphors were successfully synthesized.By utilizing time-resolved emission spectroscopy(TRES),photo luminescence(PL)spectra,and fluorescence decay curve,the Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):Cr^(3+)phosphor is determined to exhibit a broadband emission(650-1150 nm)with a peak at 795 nm due to Cr^(3+)occupying multiple cationic sites,Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):0.1Cr^(3+)has excellent thermal stability(86%@425 K),and co-doping Pr^(3+)ions into Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):0.1Cr^(3+)obtains highly efficient NIR emission.The Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):0.01 Pr^(3+),0.1 Cr^(3+)phosphor has quantum yield of 89.4%thanks to the energy transfer effect from Pr^(3+)to Cr^(3+).The fabricated NIR phosphorconverted light emitting diode(pc-LED)by integrating the blue chip with Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):0.01 Pr^(3+),0.1Cr^(3+)has diverse applications including night vision,non-destructive testing,and medical imaging.展开更多
基金the National Natural Science Foundation of China(12374376)Natural Science Foundation of Shandong Province(ZR2021ZD10)Project of the Qilu Young Scholar Program of Shandong University.
文摘Exploring high-performance broadband near-infrared(NIR)emitting materials is crucial for the development of NIR devices.In this study,Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):Cr^(3+)and rare earth ion Pr^(3+)co-doped Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):Pr^(3+),Cr^(3+)phosphors were successfully synthesized.By utilizing time-resolved emission spectroscopy(TRES),photo luminescence(PL)spectra,and fluorescence decay curve,the Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):Cr^(3+)phosphor is determined to exhibit a broadband emission(650-1150 nm)with a peak at 795 nm due to Cr^(3+)occupying multiple cationic sites,Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):0.1Cr^(3+)has excellent thermal stability(86%@425 K),and co-doping Pr^(3+)ions into Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):0.1Cr^(3+)obtains highly efficient NIR emission.The Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):0.01 Pr^(3+),0.1 Cr^(3+)phosphor has quantum yield of 89.4%thanks to the energy transfer effect from Pr^(3+)to Cr^(3+).The fabricated NIR phosphorconverted light emitting diode(pc-LED)by integrating the blue chip with Ca_(3)MgSn_(0.5)Zr_(0.5)Ge_(3)O_(12):0.01 Pr^(3+),0.1Cr^(3+)has diverse applications including night vision,non-destructive testing,and medical imaging.
