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15 papers found.
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Synthesis of Large-Area Single-Layer Graphene Using Refined Cooking Palm Oil on Copper Substrate by Spray Injector-Assisted CVD

We present a synthesis of large-area single-layer graphene on copper substrate using a refined cooking palm oil, a natural single carbon source, by a home-made spray injector-assisted chemical vapor deposition system. The effects of the distance between spray nozzle and substrate, and growth temperature are studied. From Raman mapping analysis, shorter distance of 1 cm and...

Computational Analysis of the Optical and Charge Transport Properties of Ultrasonic Spray Pyrolysis-Grown Zinc Oxide/Graphene Hybrid Structures

Ali 0 Abdul Manaf Hashim 0 0 Malaysia-Japan International Institute of Technology , Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur , Malaysia We demonstrate a systematic

Evolution of Zinc Oxide Nanostructures Grown on Graphene by Ultrasonic Spray Pyrolysis and Its Statistical Growth Modelling

Hashim 0 0 Malaysia-Japan International Institute of Technology , Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur , Malaysia The evolution of zinc oxide nanostructures grown

Density Functional Theory Study of Atomic Layer Deposition of Zinc Oxide on Graphene

The dissociation of zinc ions (Zn2+) from vapor-phase zinc acetylacetonate, Zn(C5H7O2)2, or Zn(acac)2 and its adsorption onto graphene oxide via atomic layer deposition (ALD) were studied using a quantum mechanics approach. Density functional theory (DFT) was used to obtain an approximate solution to the Schrödinger equation. The graphene oxide cluster model was used to represent...

Synthesis of Zinc Oxide Nanostructures on Graphene/Glass Substrate via Electrochemical Deposition: Effects of Potassium Chloride and Hexamethylenetetramine as Supporting Reagents

Lumpur , Malaysia 1 & Abdul Manaf Hashim The effects of the supporting reagents hexamethylenetetramine (HMTA) and potassium chloride (KCl) mixed in zinc nitrate hexahydrate (Zn(NO3)2 6H2O) on the

Seed/catalyst-free growth of zinc oxide on graphene by thermal evaporation: effects of substrate inclination angles and graphene thicknesses

Nurul Fariha Ahmad 0 Kanji Yasui 1 Abdul Manaf Hashim 0 0 Malaysia-Japan International Institute of Technology , Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100 Kuala Lumpur

Synthesis of gallium nitride nanostructures by nitridation of electrochemically deposited gallium oxide on silicon substrate

Manaf Hashim 0 0 Malaysia-Japan International Institute of Technology , Universiti Teknologi Malaysia, Jalan Semarak, 54100 Kuala Lumpur , Malaysia 1 Department of Electrical Engineering, Nagaoka

Seed/Catalyst-Free Growth of Gallium-Based Compound Materials on Graphene on Insulator by Electrochemical Deposition at Room Temperature

We report the growth of gallium-based compounds, i.e., gallium oxynitride (GaON) and gallium oxide (Ga2O3) on multilayer graphene (MLG) on insulator using a mixture of ammonium nitrate (NH4NO3) and gallium nitrate (Ga(NO3)3) by electrochemical deposition (ECD) method at room temperature (RT) for the first time. The controlling parameters of current density and electrolyte...

Optical properties of ZnO/BaCO3 nanocomposites in UV and visible regions

Pure zinc oxide and zinc oxide/barium carbonate nanoparticles (ZnO-NPs and ZB-NPs) were synthesized by the sol–gel method. The prepared powders were characterized by X-ray diffraction (XRD), ultraviolet–visible (UV–Vis), Auger spectroscopy, and transmission electron microscopy (TEM). The XRD result showed that the ZnO and BaCO3 nanocrystals grow independently. The Auger...

Electrochemically deposited gallium oxide nanostructures on silicon substrates

We report a synthesis of β-Ga2O3 nanostructures on Si substrate by electrochemical deposition using a mixture of Ga2O3, HCl, NH4OH, and H2O. The presence of Ga3+ ions contributed to the deposition of Ga2O3 nanostructures on the Si surface with the assistance of applied potentials. The morphologies of the grown structures strongly depended on the molarity of Ga2O3 and pH level of...

Synthesis of zinc oxide nanostructures on graphene/glass substrate by electrochemical deposition: effects of current density and temperature

The electrochemical growth of zinc oxide (ZnO) nanostructures on graphene on glass using zinc nitrate hexahydrate was studied. The effects of current densities and temperatures on the morphological, structural, and optical properties of the ZnO structures were studied. Vertically aligned nanorods were obtained at a low temperature of 75°C, and the diameters increased with current...

Seed/catalyst-free vertical growth of high-density electrodeposited zinc oxide nanostructures on a single-layer graphene

Nur Suhaili Abd Aziz 0 Mohamad Rusop Mahmood Kanji Yasui Abdul Manaf Hashim 0 1 0 Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia , Jalan Semarak, Kuala Lumpur

High electron mobility and low carrier concentration of hydrothermally grown ZnO thin films on seeded a-plane sapphire at low temperature

Nurul Azzyaty Jayah 0 Hafizal Yahaya 0 Mohamad Rusop Mahmood Tomoaki Terasako Kanji Yasui Abdul Manaf Hashim 0 0 Malaysia-Japan International Institute of Technology , Universiti Teknologi Malaysia

Seed/catalyst-free growth of zinc oxide nanostructures on multilayer graphene by thermal evaporation

Yasui 4 Abdul Manaf Hashim 0 1 0 Malaysia-Japan International Institute of Technology , Universiti Teknologi Malaysia, Jalan Semarak, Kuala Lumpur 54100 , Malaysia 1 MIMOS Berhad, Technology Park

Seedless growth of zinc oxide flower-shaped structures on multilayer graphene by electrochemical deposition

A seedless growth of zinc oxide (ZnO) structures on multilayer (ML) graphene by electrochemical deposition without any pre-deposited ZnO seed layer or metal catalyst was studied. A high density of a mixture of vertically aligned/non-aligned ZnO rods and flower-shaped structures was obtained. ML graphene seems to generate the formation of flower-shaped structures due to the...