Fig. 5: Luminescence properties of NIR pc-LEDs using YAG:2%Ce3+, 20%Mn2+.
From: Tracing the origin of near-infrared emissions emanating from manganese (II)
a Emission spectra of the fabricated pc-LEDs at varied current over 10–800 mA; b NIR images and thermal images of the fabricated pc-LEDs at varied driving currents; c Photos of the lighting pc-LEDs taken by a normal camera and a NIR camera
