XPS study of triangular GaN nano/micro-needles grown by MOCVD technique

Kumar M, Kumar A, Thapa SB, Christiansen S, Singh R (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Materials Science and Engineering B-Advanced Functional Solid-State Materials Elsevier

Book Volume: 186

Pages Range: 89-93

Journal Issue: 1

DOI: 10.1016/j.mseb.2014.03.010

Abstract

Triangular GaN nano/micro scale needles (TGN) grown on nickel coated c-plane sapphire substrate with highly dense ensemble of TGN and low dense ensemble of TGN have been investigated in the present work. The observed morphology of these TGN is in the form of triangular faceted needle like structures with average length in the order of fifty micrometres and cross-sections range from 500 nm to 3 μm near the base of TGN. X-ray diffraction spectra illustrate the wurtzite crystal structure of TGN and better crystalline nature of the highly dense ensemble of TGN. Analysis of the X-ray photoelectron spectroscopy core level spectra shows that surfaces with highly dense ensemble of TGN and low dense ensemble of TGN interact differently with the unintended impurities (such as oxygen and carbon) and these impurities exhibit low reactivity (chemical modifications) to the surface of highly dense ensemble of TGN. © 2014 Elsevier B.V.

Involved external institutions

Indian Institute of Technology (IIT), Delhi IN India (IN) Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Kumar, M., Kumar, A., Thapa, S.B., Christiansen, S., & Singh, R. (2014). XPS study of triangular GaN nano/micro-needles grown by MOCVD technique. Materials Science and Engineering B-Advanced Functional Solid-State Materials, 186(1), 89-93. https://doi.org/10.1016/j.mseb.2014.03.010

MLA:

Kumar, Mukesh, et al. "XPS study of triangular GaN nano/micro-needles grown by MOCVD technique." Materials Science and Engineering B-Advanced Functional Solid-State Materials 186.1 (2014): 89-93.

BibTeX: Download