Blue Light-Emitting Diode Based on ZnO

Broadband ZnO single-nanowire light-emitting diode.

We present a novel technique for reliable electrical injection into single semiconductor nanowires for light-emitting diodes and lasers. The method makes use of a high-resolution negative electron-beam resist and direct electron-beam patterning for the precise fabrication of a metallic top contact along the length of the nanowire, while a planar substrate is used as a bottom contact. It can be ...

Thermally enhanced blue light-emitting diode

Articles you may be interested in Performance enhancement of blue light-emitting diodes with a special designed AlGaN/GaN superlattice electron-blocking layer Appl. Raman and emission characteristics of a-plane InGaN/GaN blue-green light emitting diodes on r-sapphire substrates J. Thermally stable and highly reflective AgAl alloy for enhancing light extraction efficiency in GaN light-emitting d...

ZnO - Based Light - Emitting Diodes

White Electroluminescence Using ZnO Nanotubes/GaN Heterostructure Light-Emitting Diode

We report the fabrication of heterostructure white light-emitting diode (LED) comprised of n-ZnO nanotubes (NTs) aqueous chemically synthesized on p-GaN substrate. Room temperature electroluminescence (EL) of the LED demonstrates strong broadband white emission spectrum consisting of predominating peak centred at 560 nm and relatively weak violet-blue emission peak at 450 nm under forward bias....

Blue light emitting diode exceeding 100 % quantum efficiency

1 Introduction GaN-based light-emitting diodes (LEDs) deliver the desired high efficiency only at relatively low injection current density [1]. At the elevated current densities required in practical high-brightness applications , the efficiency is substantially reduced. This efficiency droop phenomenon has been intensely investigated for a number of years, but the physical mechanisms behind it...