Fig. 1. (a) Schematic of the nanowire cross-section top and profile view. (b) An SEM image of a nanowire array. (c) Schematic of the fabricated nanowire LED. (d) L-I-V curves for a representative nanowire LED. (e) Normalized voltage-dependent EL spectra. (f) SEM image of nanowire arrays arranged to form the letters “ANU”. The inset shows an infrared camera image of the EL emission from the nanowire array LEDs.