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Article

Catalyst-Assisted Large-Area Growth of Single-Crystal β-Ga2O3 Nanowires on Sapphire Substrates by Metal–Organic Chemical Vapor Deposition

1
R&D Center for Solid-state Lighting, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
2
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3
Korea Institute of Ceramic Engineering and Technology, 15-5, Chungmugong-dong, Jinju-si, Gyeongsongnam-do 52851, Korea
4
Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(6), 1031; https://doi.org/10.3390/nano10061031
Received: 28 April 2020 / Revised: 25 May 2020 / Accepted: 26 May 2020 / Published: 28 May 2020
(This article belongs to the Special Issue Ga2O3-Based Nanomaterials)
In this work, we have achieved synthesizing large-area high-density β-Ga2O3 nanowires on c-plane sapphire substrate by metal–organic chemical vapor deposition assisted with Au nanocrystal seeds as catalysts. These nanowires exhibit one-dimensional structures with Au nanoparticles on the top of the nanowires with lengths exceeding 6 μm and diameters ranging from ~50 to ~200 nm. The β-Ga2O3 nanowires consist of a single-crystal monoclinic structure, which exhibits strong ( 2 ¯ 01) orientation, confirmed by transmission electronic microscopy and X-ray diffraction analysis. The PL spectrum obtained from these β-Ga2O3 nanowires exhibits strong emissions centered at ~360 and ~410 nm, respectively. The energy band gap of the β-Ga2O3 nanowires is estimated to be ~4.7 eV based on an optical transmission test. A possible mechanism for the growth of β-Ga2O3 nanowires is also presented. View Full-Text
Keywords: β-Ga2O3; nanowires; MOCVD β-Ga2O3; nanowires; MOCVD
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MDPI and ACS Style

Jia, C.; Jeon, D.-W.; Xu, J.; Yi, X.; Park, J.-H.; Zhang, Y. Catalyst-Assisted Large-Area Growth of Single-Crystal β-Ga2O3 Nanowires on Sapphire Substrates by Metal–Organic Chemical Vapor Deposition. Nanomaterials 2020, 10, 1031. https://doi.org/10.3390/nano10061031

AMA Style

Jia C, Jeon D-W, Xu J, Yi X, Park J-H, Zhang Y. Catalyst-Assisted Large-Area Growth of Single-Crystal β-Ga2O3 Nanowires on Sapphire Substrates by Metal–Organic Chemical Vapor Deposition. Nanomaterials. 2020; 10(6):1031. https://doi.org/10.3390/nano10061031

Chicago/Turabian Style

Jia, Chunyang, Dae-Woo Jeon, Jianlong Xu, Xiaoyan Yi, Ji-Hyeon Park, and Yiyun Zhang. 2020. "Catalyst-Assisted Large-Area Growth of Single-Crystal β-Ga2O3 Nanowires on Sapphire Substrates by Metal–Organic Chemical Vapor Deposition" Nanomaterials 10, no. 6: 1031. https://doi.org/10.3390/nano10061031

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