Nano structured phases of galium oxide (GaOOH, α-Ga2O3, β-Ga2O3, γ-Ga2O3, δ-Ga2O3 and ε-Ga2O3): fabrication, structural, and electronic structure investigations

Title
Nano structured phases of galium oxide (GaOOH, α-Ga2O3, β-Ga2O3, γ-Ga2O3, δ-Ga2O3 and ε-Ga2O3): fabrication, structural, and electronic structure investigations
Authors
채근화원성옥Aditya SharmaMayora VarshneyHimani SaraswatSurekha ChaudharyJai ParkashHyun-Joon Shin
Keywords
gallium oxide; XRD; XAS; Polymorphs
Issue Date
2020-03
Publisher
International Nano Letters
Citation
VOL 10-79
Abstract
Regardless of much curiosity in the synthesis and diversifying properties of the polymorphs of gallium oxide, they are still unrevealed due to their nanoscale size and structural disorders. In this study, convincing methods have been applied to achieve various phases of gallium oxide (i.e., GaOOH, α-Ga2O3, β-Ga2O3, γ-Ga2O3, δ-Ga2O3, and ε-Ga2O3). X-ray diffraction (XRD) along with Rietveld refinement has been employed to investigate the structural parameters of barely reported phases. Transmission electron microscopy (TEM) images reveal the impact of the protocols of chemical synthesis on the morphology/size of the polymorphs of gallium oxide. Mechanistic discussion on the formation of nano-rod morphology in some of the phases (GaOOH and α-Ga2O3) and nano-particle morphology in other (β-Ga2O3, γ-Ga2O3, δ-Ga2O3 and ε-Ga2O3) phases is also provided by considering the experimental parameters. The existence of Ga3+ ions and their local hybridization with the oxygen is investigated using the X-ray absorption spectroscopy (XAS) at Ga K-edge and conveyed the phase dependence on the hybridization of frontier orbitals.
URI
http://pubs.kist.re.kr/handle/201004/72516
ISSN
2228-532
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE