Preparation of CuO Thin Films and Their Electrical Conductivity

Ohya, Y.; Ito, Syouko; Ban, Takayuki; Takahashi, Yasutaka

doi:10.4028/www.scientific.net/kem.181-182.113

Cited by 34 publications

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“…Copper monoxide has a monoclinic structure having the following lattice parameters a = 4.684 Å, b = 3.425 Å, c = 5.129 Å and β = 99.28˚ [2,3]. CuO exhibit a square-planar co-ordination.…”

Section: Introductionmentioning

confidence: 99%

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Mammah¹,

Opara²,

Omubo-Pepple³

et al. 2013

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Thin films of CuO having an average thickness of 720 nm were deposited on clean glass substrates using the Aqueous Chemical Growth (ACG) method with Cu(NO 3 ) 2 and C 6 H 12 N 4 as precursors and annealed at different temperatures in order to determine the effect of annealing temperature on their optical and solid state properties. The study was carried out using Rutherford Backscattering (RBS) spectroscopy for t thickness and chemical composition, X-Ray Diffraction (XRD) for crystallographic structure and a UV-VIS spectrophotometer for spectral analysis. The results indicate that the absorbance and absorption/extinction coefficient of the films vary inversely with annealing temperature while the transmittance, reflectance, direct band gap, real/imaginary dielectric constants and refractive index vary directly with annealing temperature. The results further indicate an improvement in crystallinity as annealing temperature increases. The as-deposited and annealed ACG CuO thin films were found to be suitable for use as window layer in solar cells among other electronic and optoelectronic applications.

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Section: Introductionmentioning

confidence: 99%

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Mammah¹,

Opara²,

Omubo-Pepple³

et al. 2013

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“…[1,2] CuO is a material of interest for a variety of practical applications such as gas sensing, [3,4] photovoltaics, [5,6] heterogeneous-and photo-catalysis, [7,8] field-emission materials. [9] Moreover, copper has a long history of use as an antimicrobial agent with its recorded use as early as 2600 BC.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic and Antifungal Activity of Flower-Like Copper Oxide Nanostructures

Azimirad

Safa

2014

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

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CuO/Cu(OH) 2 nanostructures composed of hierarchical twodimensional (2D) nanosheets and spherical architectures constructed by ultrathin nanowalls in thickness were generated by simply immersing copper foil substrate into air, DI water, and 20 mM NH 4 OH solution at 25 • C. The presence of hydroxyl groups in ammonia bath extremely affected the self-assembling of tiny 2D nanosheets and nanowalls into intricate hierarchical nanostructures. Raman spectroscopy as well as XRD patterns confirmed the presence of thick layer of the CuO monoclinic single-phase nanocrystals at the surface of sample grown in DI water where in alkaline bath, oxide and hydroxide phases were stabilized. Fungicidal activity in addition to photocatalytic methylene blue degradation of the CuO/Cu(OH) 2 nanostructures were studied. The vertical nanoflakes of CuO/Cu(OH) 2 grown at ammonia bath showed the strongest antifungal and photocatalytic activity among the samples.

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“…The lattice parameters of CuO are a = 4.684 Å, b = 3.425 Å, c = 5.129 Å and b = 99.28° [4]. And its suitable optical Properties, Its band gap is reported to be between 1.3 and 1.7 eV with a black color and a partial transparency in the visible range [5]. Due to the existence of copper vacancies in the structure, CuO exhibits native p-type conductivity [6].…”

Section: Introductionmentioning

confidence: 99%

Electrical behavior and Optical Properties of Copper oxide thin Films

Ibrahim¹,

Salman²,

Ahmed³

2011

Baghdad Sci.J

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In this work the structural, electrical and optical Properties of CuO semiconductor films had been studied, which prepared at three thickness (100, 200 and 500 nm) by spray pyrolysis method at 573K substrate temperatures on glass substrates from 0.2M CuCl2•2H2O dissolved in alcohol. Structural Properties shows that the films have only a polycrystalline CuO phase with preferential orientation in the (111) direction, the dc conductivity shows that all films have two activation energies, Ea1 (0.45-0.66 eV) and Ea2 (0.055-.0185 eV), CuO films have CBH (Correlated Barrier Hopping) mechanism for ac-conductivity. The energy gap between (1.5-1.85 eV).

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Preparation of CuO Thin Films and Their Electrical Conductivity

Cited by 34 publications

References 0 publications

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Annealing effect on the optical and solid state properties of cupric oxide thin films deposited using the Aqueous Chemical Growth (ACG) method

Photocatalytic and Antifungal Activity of Flower-Like Copper Oxide Nanostructures

Electrical behavior and Optical Properties of Copper oxide thin Films

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