Fig. 2: Electrical and optical characteristics of transparent perovskite light-emitting diodes.
From: Transparent near-infrared perovskite light-emitting diodes
a Comparison of current density (top graph) and radiance (bottom graph) between PeLEDs using Al/ITO/Ag/ITO (black line), ITO (blue line), ITO/Ag/ITO (green line), and Al (red line) as back electrodes. b Comparison of the optical transmittance of Al/ITO/Ag/ITO PeLED (black solid line) and ITO PeLED (blue solid line) and their respective Al/ITO/Ag/ITO (black dashed line) and ITO (blue dashed line) transparent electrodes on glass. Bottom plots show the emission spectra of a typical smart-watch display, and the NIR EL spectrum of the PeLED.
