Fig. 6: Multiple applications of SSBO:0.02Fe3+,0.15Yb3+-based NIR pc-LED. | Light: Science & Applications

Fig. 6: Multiple applications of SSBO:0.02Fe3+,0.15Yb3+-based NIR pc-LED.

From: Energy extraction from dark Fe3+ in A2Sc2B4O11:Fe3+, Yb3+ (A = Sr, Ba) toward promoted NIR luminescence and pc-LED light source for multifunctional applications

Fig. 6: Multiple applications of SSBO:0.02Fe3+,0.15Yb3+-based NIR pc-LED.The alternative text for this image may have been generated using AI.

a Electroluminescence spectra of a home-made pc-LED by combining a 365 nm LED chip with SSBO:0.02Fe3+,0.15Yb3+ phosphor. The insets show photograph of the pc-LED with light off and that with light on taken by a NIR camera, respectively. b One IC card and c two apples (one having a surface flaw) photographed under natural light and under NIR light illuminated by the fabricated pc-LED, respectively. d Photograph of the NIR light penetrating human fingers. e Schematic diagram of liquid composition detection using NIR light sources. f Transmission spectra (blue curve) of alcohol solutions with different water volume fraction, and the NIR emission spectra of SSBO:0.02Fe3+,0.15Yb3+-based pc-LED. g Emission intensity of the home-made pc-LED light passing through alcohol solutions and solution absorption rate at peak wavelength ~ 973 nm versus water content volumes

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