Radial Nanowire Light-Emitting Diodes in the (AlxGa1-x)yIn1-yP Material System.

Berg, Alexander; Yazdi, Sadegh; Nowzari, Ali; Storm, Kristian; Jain, Vishal; Vainorius, Neimantas; Samuelson, Lars; Wagner, Jakob B et al. · Nano Lett · 2016

basic_science · Level V

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Abstract

Nanowires have the potential to play an important role for next-generation light-emitting diodes. In this work, we present a growth scheme for radial nanowire quantum-well structures in the AlGaInP material system using a GaInP nanowire core as a template for radial growth with GaInP as the active layer for emission and AlGaInP as charge carrier barriers. The different layers were analyzed by X-ray diffraction to ensure lattice-matched radial structures. Furthermore, we evaluated the material composition and heterojunction interface sharpness by scanning transmission electron microscopy energy dispersive X-ray spectroscopy. The electro-optical properties were investigated by injection luminescence measurements. The presented results can be a valuable track toward radial nanowire light-emitting diodes in the AlGaInP material system in the red/orange/yellow color spectrum.