Copper Zinc Sulfur Compound Solar Cells Fabricated by Spray Pyrolysis Deposition for Solar Cells

Kitagawa, Noriyuki; Ito, Seigo; Nguyen, Duy–Cuong

doi:10.4236/nr.2013.41a018

Cited by 13 publications

(15 citation statements)

References 8 publications

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“…The estimated bandgap (Eg) values are consistent with those of CuS and ZnS, where each of them has been known as a direct bandgap semiconductor with compositional modulation ability. These observations are in good agreement with the works of Sreejith et al [18] and Noriyuki et al [19] for copper zinc sulphide thin films. They attributed the increased bandgap to the direct effects of enlarged grain sizes as well as a reduction in structural defect within the films.…”

Section: Resultssupporting

confidence: 93%

Optical Properties of Copper-Zinc Sulphide Network from Mixed Single Solid Source Precursors of Copper and Zinc Dithiocarbamates

Emegha

Okafor

Ukhurebor

2021

Walailak J Sci & Tech

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Thin films of copper-zinc sulphide (CxZn1-xS) have been deposited by metal-organic chemical vapour deposition (MOCVD) technique at 400 °C on soda-lime substrates. The films contained copper dithiocarbamate and zinc dithiocarbamate of various concentrations. The effect of the precursor’s concentration was investigated using Fourier transforms infrared (FTIR) spectroscopy and UV-Vis Spectrophotometer. The precursors’ FTIR spectrums have the characteristics of copper sulphide and zinc sulphide absorption bands below 800 cm-1. The optical properties for all the samples were studied by reading the absorbance and transmittance spectra in the range of 300 - 900 nm. The results indicate direct bandgap energy that ranged between 2.20 to 3.42 eV. The films were found to have a very high transmittance in the visible and near-infrared regions and an average reflectance of about 0.14 in the same regions. Optical constants like refractive index, extinction coefficient, and optical conductivity were estimated as a function of photon energy. The various properties exhibited by the films indicate that the films can find application in various optoelectronic devices.

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Section: Resultssupporting

confidence: 93%

Optical Properties of Copper-Zinc Sulphide Network from Mixed Single Solid Source Precursors of Copper and Zinc Dithiocarbamates

Emegha

Okafor

Ukhurebor

2021

Walailak J Sci & Tech

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“…The PV characteristics were confirmed as having a cell structure of <glass/FTO/TiO 2 /In 2 S 3 /CZS/carbon>. The best cell was observed in the CZS films with a Cu/(Cu + Zn) ratio of 50%; these cells depicted a conversion efficiency of 1.7% …”

Section: Compound Solar Cells With Bifunction Of Photoabsorption and mentioning

confidence: 84%

Printable solar cells

Ito

2014

WIREs Energy & Environment

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Printable solar cells attract academic and industrial interests because solar cells should be cost-effective systems and have to be fabricated by non-vacuum methods such as screen printing, doctor blading, spin coating, spray deposition, and electrochemical deposition. In order to be a cost-effective solar system, the solar cells neither include expensive (indium) and toxic materials (cadmium and mercury) nor expensive processes such as chemical vapor deposition and sputtering. Similar to printed solar cells, many types of solar cells have been investigated in the past two decades: organic, dye-sensitized solar cells, Cu(In,Ga)(S,Se) 2 , Cu 2 ZnSn(S,Se) 4 , organic thin-film photovoltaic cells, and so on. Now, the photoenergy conversion efficiencies of printed solar cells have been improved by more than 10% with the efforts of scientists. In this review, prominent progress has been presented for the future of our society.

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“…This critical point can be overcome under out-of-equilibrium conditions of synthesis. As well as we know, few studies report the attempt of synthesizing CuZnS 2 , (Cu, Zn)S or Cu 2 Zn 2 S 3 [7][8][9][10][11][12]. Uhuegbu et al synthesized Cu-Zn-S compounds through a one-pot synthesis with metal chlorides and thiourea in solution, assisted by opportune complexing agents [7].…”

Section: Introductionmentioning

confidence: 99%

“…Uhuegbu et al synthesized Cu-Zn-S compounds through a one-pot synthesis with metal chlorides and thiourea in solution, assisted by opportune complexing agents [7]. Conversely, Aduloju et al doped ZnS from a contact solution of Cu 2+ , the resulting products being homogenized by a mild temperature treatment (300 • C) Kitagawa et al claimed to have successfully deposited thin films of Cu 2 Zn 2 S 3 by spray pyrolysis [10]. Bagdare et al claimed to have obtained a nanocrystalline thin films of Cu x Zn 1-x S by means of chemical bath deposition [11].…”

Section: Introductionmentioning

confidence: 99%

Operando SXRD of E-ALD deposited sulphides ultra-thin films: Crystallite strain and size

Giaccherini

Russo

Carlà

et al. 2018

Applied Surface Science

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a b s t r a c tElectrochemical Atomic Layer Deposition (E-ALD), exploiting surface limited electrodeposition of atomic layers, can easily grow highly ordered ultra-thin films and 2D structures. Among other compounds Cu x Zn y S grown by means of E-ALD on Ag(111) has been found particularly suitable for the solar energy conversion due to its band gap (1.61 eV). However its growth seems to be characterized by a micrometric thread-like structure, probably overgrowing a smooth ultra-thin films. On this ground, a SXRD investigation has been performed, to address the open questions about the structure and the growth of Cu x Zn y S by means of E-ALD. The experiment shows a pseudo single crystal pattern as well as a powder pattern, confirming that part of the sample grows epitaxially on the Ag(111) substrate. The growth of the film was monitored by following the evolution of the Bragg peaks and Debye rings during the E-ALD steps. Breadth and profile analysis of the Bragg peaks lead to a qualitative interpretation of the growth mechanism. This study confirms that Zn lead to the growth of a strained Cu 2 S-like structure, while the growth of the thread-like structure is probably driven by the release of the stress from the epitaxial phase.

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Copper Zinc Sulfur Compound Solar Cells Fabricated by Spray Pyrolysis Deposition for Solar Cells

Cited by 13 publications

References 8 publications

Optical Properties of Copper-Zinc Sulphide Network from Mixed Single Solid Source Precursors of Copper and Zinc Dithiocarbamates

Optical Properties of Copper-Zinc Sulphide Network from Mixed Single Solid Source Precursors of Copper and Zinc Dithiocarbamates

Printable solar cells

Operando SXRD of E-ALD deposited sulphides ultra-thin films: Crystallite strain and size

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