Fabrication and characterization of copper oxide-silicon nanowire heterojunction photodiodes

Akgül, Güvenç; Akgül, Funda Aksoy; Mulazimoglu, Emre; Ünalan, Hüsnü Emrah; Turan, Raşit

doi:10.1088/0022-3727/47/6/065106

Cited by 36 publications

(17 citation statements)

References 40 publications

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“…Room-temperature value of ideality factor obtained for the p-CuO/n-Si heterojunction has been found as 4.2 in the voltage range of 0.5-1 V. The value of ideality factor for an ideal diode should be in between 1 and 2; however, this high value of the ideality factor can account for the strong parasitic generation, surface state-induced recombination and SiO 2 layer formed at the interface [37]. Figure 6 shows the I-V characteristics of the different p-CuO/n-Si heterojunction solar cells measured under the illumination of 200 W halogen lamp.…”

Section: Photoresponse Studymentioning

confidence: 92%

Effect of bath concentration on the growth and photovoltaic response of SILAR-deposited CuO thin films

Visalakshi

Kannan

Valanarasu³

et al. 2015

Appl. Phys. A

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Solar cell property of p-CuO/n-Si heterojunction was investigated using SILAR-deposited CuO thin films. The effects of copper salt concentration on the growth of CuO films and its effect on the efficiency in solar cell conversion were investigated. Structural, morphological, optical and electrical studies of the CuO thin films deposited at 90°C with different copper sulphate concentrations are reported. Crystallinity of the film is found to increase with the increase in copper sulphate concentration. The measured Raman spectrum of the deposited film showed peaks corresponding to CuO phase. It is observed by the SEM that the film is homogeneous fully covering the substrate. The optical band gap of the deposited film has exhibited a decrease in band gap from 1.76 to 1.57 eV with the increase in copper sulphate concentration. Solar cell device was constructed using the p-CuO film deposited on n-silicon substrate, and its photovoltaic response was measured. It showed increasing photoresponse with increasing concentration of copper sulphate.

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Section: Photoresponse Studymentioning

confidence: 92%

Effect of bath concentration on the growth and photovoltaic response of SILAR-deposited CuO thin films

Visalakshi

Kannan

Valanarasu³

et al. 2015

Appl. Phys. A

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“…The lower oxidation state, copper (I) oxide (Cu 2 O), appears red in color and has a bulk band gap near 2.1 eV, 1 whereas the higher oxidation state, copper (II) oxide (CuO), is black with a bulk band gap at approximately 1.85 eV. 1 Optically absorbing in the ultraviolet (UV) and visible spectral range, these materials are useful for a number applications including photovoltaic devices, 2-4 photodetectors, 5 and photocatalysis. 6 Furthermore, copper oxides can be used for gas sensors, 7,8 enzyme-free glucose sensors, 9 lithium ion batteries, 10 and supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Mineralization and optical characterization of copper oxide nanoparticles using a high aspect ratio bio-template

Zaman

Haberer

2014

Journal of Applied Physics

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Organized chains of copper oxide nanoparticles were synthesized, without palladium (Pd) activation, using the M13 filamentous virus as a biological template. The interaction of Cu precursor ions with the negatively charged viral coat proteins were studied with Fourier transform infrared spectroscopy, transmission electron microscopy, and energy dispersive x-ray spectroscopy. Discrete nanoparticles with an average diameter of 4.5 nm and narrow size distribution were closely spaced along the length of the high aspect ratio templates. The synthesized material was identified as a mixture of cubic Cu2O and monoclinic CuO. UV/Vis absorption measurements were completed and a direct optical band gap of 2.87 eV was determined using Tauc's method. This value was slightly larger than bulk, signaling quantum confinement effects within the templated materials.

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“…ACCEPTED MANUSCRIPT 3 implantation of metal and oxygen ions or one-step solid state reaction method at room temperature [8,13,14]. The CuO film can also be obtained by employing thermal oxidation, electro-deposition, chemical conversion, chemical brightening, spraying, chemical vapour deposition, plasma evaporation, reactive sputtering and molecular beam epitaxy technique [8,9,12,15].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The relatively smaller band gap of CuO makes it a potentially superior material for photo-detection and optical switching applications in the visible or near-infrared region in comparison to other large band-gap metal oxides [12,13]. Reports are available on the development of CuO based renewable energy technologies by exploiting its efficient solar absorbance and low thermal emittance properties [9,[13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Characterization of nano-powder grown ultra-thin film p-CuO/n-Si hetero-junctions by employing vapour-liquid-solid method for photovoltaic applications

Sultana¹,

Das²,

Das

et al. 2016

Thin Solid Films

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Fabrication and characterization of copper oxide-silicon nanowire heterojunction photodiodes

Cited by 36 publications

References 40 publications

Effect of bath concentration on the growth and photovoltaic response of SILAR-deposited CuO thin films

Effect of bath concentration on the growth and photovoltaic response of SILAR-deposited CuO thin films

Mineralization and optical characterization of copper oxide nanoparticles using a high aspect ratio bio-template

Characterization of nano-powder grown ultra-thin film p-CuO/n-Si hetero-junctions by employing vapour-liquid-solid method for photovoltaic applications

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