Fig. 5: Performance of the fabricated high-power NIR-LED device.
From: Strategies to approach high performance in Cr3+-doped phosphors for high-power NIR-LED light sources
a Body color of the CSSG:6%Cr3+ phosphor under sunlight. b NIR-LED device fabricated using the optimized phosphor and a 460 nm blue LED. c Working state of the NIR-LED taken without a filter and d with a longpass filter at 650 nm. e EL spectra, f output optical powers, and g conversion efficiencies of the NIR-LED depending on the driving current. h EL spectrum fitted by the Gaussian formula.
