Fig. 2: Characterization of stand-alone UVC micro-LEDs.
From: High-power AlGaN deep-ultraviolet micro-light-emitting diode displays for maskless photolithography
a, J–V characteristics of UVC micro-LEDs in different device sizes in semi-log scales. b, Size-dependent EQE at various injected current densities. c, Peak EQE and EQE droop ratio in relationship to each device size point (shown as dots) with fitted trendlines. d, Normalized EL spectra of 3 μm UVC micro-LED. e, Size-dependent optical power density at various injected current densities.
