Self‐Catalytic Growth of β‐Ga2O3 Nanostructures by Chemical Vapor Deposition1. Issue 5 (17th September 2014)

• Record Type: Journal Article
• Authors: Kumar, Sudheer; Tessarek, Christian; Sarau, George; Christiansen, Silke; Singh, Rajendra
• Is Part Of: Advanced engineering materials. Volume 17:Issue 5(2015:May)
• Page Start: 709
• Page End: 715
• Publication Date: 2014-09-17
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201400289
• Languages: English
• ISSNs: 1438-1656

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="adem201400289-sec-0001" sec-type="section"> <p>In this work, we have studied the synthesis of single crystalline self‐catalyzed beta gallium oxide (β‐Ga<sub>2</sub>O<sub>3</sub>) nanostructures by chemical vapor deposition technique. We have adopted a new approach to grow the nanostructures instead of using conventional foreign metal nano‐catalyst based‐approaches. The as‐grown nanostructures including nanowires and nanosheets (NSHs) were grown on spin‐coated Ga<sub>2</sub>O<sub>3</sub> films. The structural studies such as X‐ray diffraction, Raman and transmission electron microscope (TEM) investigations on the nanostructures showed monoclinic phase of Ga<sub>2</sub>O<sub>3</sub> and single crystalline structure. Furthermore, high‐resolution TEM with a selected area electron diffraction pattern recorded on a single β‐Ga<sub>2</sub>O<sub>3</sub> nanowire and nanosheet verified their single crystalline nature, having [001] as favorable growth direction. The energy dispersive X‐ray spectroscopy‐elemental mapping of as‐grown nanostructures indicated uniform distribution of Ga and O. Cathodoluminescence imaging and spectrum revealed excellent luminescence characteristics of nanostructures with a broad UV‐blue emission band (1.80–4.20 eV nm) centered at 2.64 eV. This study also highlights the growth mechanism of NSHs. These β‐Ga<sub>2</sub>O<sub>3</sub> nanostructures have great potential in nanofunctional devices.</p> </sec> </abstract>