Achieving high-performance far-red emission in Cr 3+ -activated garnet phosphors via Ca 2+ /Zr 4+ doping toward plant lighting

A novel far-red emission Gd 2.5 Ca 0.5 Al 2.95 Ga 0.5 Zr 0.5 O 12 :0.05Cr 3+ phosphor with superior performance was designed and prepared in this work, with huge potential application in the construction of high-quality FR pc-LEDs used for plant lighting.