Chip-Scale Droop-Free Fin Light-Emitting Diodes Using Facet-Selective Contacts.

Sub-micron-size light sources are currently extremely dim, achieving nanowatt output powers due to the current density and temperature droop. Recently, we reported a droop-free fin light-emitting diode (LED) pixel that at high current densities becomes a laser with record output power in the microwatt range. Here, we show a scalable method for selectively metallizing fins via their nonpolar side facet that allows electrical injection to sub-200 nm wide -ZnO fins on -GaN with at least 0.

High-brightness lasing at submicrometer enabled by droop-free fin light-emitting diodes (LEDs).

"Efficiency droop," i.e., a decline in brightness of light-emitting diodes (LEDs) at high electrical currents, limits the performance of all commercial LEDs and has limited the output power of submicrometer LEDs and lasers to nanowatts.