Investigation of Green Up-Conversion Behavior in Y_6W_2O_(15):Yb~(3+),Er~(3+)Phosphor and its Verification in 973-nm Laser-Driven GaAs Solar Cell

摘要

The green up-conversion (UC) behavior was observed in a new phosphor Y_6W_2O_(15):Er~(3+). Taking the concentration quenching and sensitization effect into consideration, we obtained the optimized phosphor Y_(5.86)W_2O_(15):0.05Yb~(3+),0.09Er~(3+). With the adhesion of Y_(5.86)W_2O_(15):0.05Yb~(3+),0.09Er~(3+) phosphor layer, the spectral response was first observed in a 973-nm laser-driven GaAs solar cell. A maximum output power of 0.339 μW was measured using a 300-μm UC phosphor layer on illumination with a 973-nm laser at 145.65 W/cm~2. These results verified the UC effect of the Y_(5.86)W_2O_(15):0.05Yb~(3+),0.09Er~(3+) phosphor synthesized herein.