@inproceedings{f31bd28ffd1f465489edf91625fa0afa,
title = "Hierarchical growth of GaN nanowires for light emitting diode applications",
abstract = "Gallium nitride nanostructures have been receiving considerable attention as building blocks for nanophotonic technologies due to their unique high aspect ratios, promising the realization of photonic and biological nanodevices such as blue light emitting diodes (LEDs), short-wavelength ultraviolet nanolasers and nanofluidic biochemical sensors. In this study, we report on the hierarchical growth of GaN nanowires (NWs) by dynamically adjusting the growth parameters using pulsed flow metalorganic chemical vapor deposition (MOCVD) technique. We carried out two step growth processes to grow hierarchical GaN NWs. At the first step the GaN NWs were grown at 950°C and in the second stage, we suitably decreased the growth temperature to 710°C to grow the hierarchical structures. The surface morphology, structural and optical characterization of the grown hierarchical GaN NWs were studied by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and photoluminescence (PL) measurements, respectively. These kind of hierarchical NWs are promising to allow flat band quantum structures that are shown to improve the efficiency of light-emitting diodes.",
keywords = "GaN, Nanowires, sHierarchical structures",
author = "Rishabh Raj and Ra, \{Yong Ho\} and Lee, \{Cheul Ro\} and Sonika Obheroi and R. Navamathavan",
note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; Gallium Nitride Materials and Devices XI ; Conference date: 15-02-2016 Through 18-02-2016",
year = "2016",
doi = "10.1117/12.2213024",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Yasushi Nanishi and Hiroshi Fujioka and Schwarz, \{Ulrich T.\} and Jen-Inn Chyi and Hadis Morko� and Jong-In Shim",
booktitle = "Gallium Nitride Materials and Devices XI",
}