Towards phase pure kesterite Cu2ZnSnS4 absorber layers growth via single step free sulfurization electrodeposition under a fix applied potential on Mo substrate

Azmi, Sara; Moujib, A.; Layachi, Omar Ait; Matei, Elena; Gâlcă, A.C.; Zaki, Mohamed Yassine; Secu, M.; Rusu, M. I.; Grigorescu, C.E.A.; Khoumri, El Mati

doi:10.1016/j.jallcom.2020.155821

Cited by 26 publications

(8 citation statements)

References 33 publications

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“…According to these studies, the band-gap values were observed to increase with the substrate temperature, which was explained in terms of losing sulphur during the annealing procedure. However, the observation of the decreasing of the band gaps upon increasing the annealing temperature has been recorded for the CZTS thin films elaborated by a single-step electrodeposition method without the sulfurization process [18,19]. It was demonstrated that the increase in annealing temperature leads to a decrease in the phase impurity presence; and the morphology of the CZTS thin-film surface was improved.…”

Section: Optical Propertiesmentioning

confidence: 99%

“…In other words, to avoid the toxicity issue due to the presence of the selenium element, it would be preferable to use a pure sulphide compound, that is, CZTS [17]. Elaborating CZTS thin films with free annealing sulfurization onto indium-doped tin oxide-coated glass substrates for solar cell applications has been performed in the studies done by Azmi et al [18,19]. But, on the other hand, using a spray technique to fabricate CZTS thin films with free annealing sulphurization is also of great interest.…”

Section: Introductionmentioning

confidence: 99%

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Study of kesterite Cu₂ZnSnS₄ (CZTS) thin films deposited by spray technique for photovoltaic applications

Khushaim

Kattan

Jaber

et al. 2021

Journal of Taibah University for Science

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For the synthesis of an absorber crystalline layer of the solar cell device, the Cu 2 ZnSnS 4 (CZTS) absorber is fabricated by using the sol-gel method and the spray deposition technique. The proposed method in this study aims to synthesize stoichiometric CZTS thin films without the sulfurization process and use of a toxic atmosphere. Thin films CZTS were sprayed on the substrates annealed at different temperatures, that are 250, 300 and 350°C, for solar cell applications. This study highlights the effect of the substrate temperature on the structural, morphological and optical properties of the CZTS deposited films. Therefore, in this study, at the higher substrate temperature, which is 350°C, a semi-optimal band-gap value of E g = 1.3 eV was obtained. For the all prepared CZTS thin films, the structural and optical properties were discussed in the light of the variations in the observed microstructure at different substrate temperatures.

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Section: Optical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of kesterite Cu₂ZnSnS₄ (CZTS) thin films deposited by spray technique for photovoltaic applications

Khushaim

Kattan

Jaber

et al. 2021

Journal of Taibah University for Science

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“…Similar results have been reported by Krishnan et al and Azmi et al using cyclic voltammetry. [ 1,12 ] To optimize the deposition potential for better photoresponse of CZTS films, sets of thin films were potentiostatically electrodeposited at different deposition potentials from −0.9 to −1.2 V versus Ag/AgCl in steps of 0.05 V by maintaining the aforementioned optimum bath conditions. In addition, further sulfurization was performed on the films by annealing at different temperatures and durations in H 2 S. The films were then subjected for photoresponse measurements in the PEC cell containing 0.1 m sodium acetate solution.…”

Section: Resultsmentioning

confidence: 99%

A Comparative Study: Sequential and Single‐Step‐Electrodeposited CZTS Thin Films

Fernando

Jayathilaka

Wijesundera

et al. 2022

Physica Status Solidi (a)

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CZTS (Cu2ZnSnS4) is a relatively new and promising semiconductor material suitable for photovoltaic applications due to its favorable optoelectronic properties. Of the many techniques available for growing these films, a comparative study on sequential and single‐step electrodeposition methods to grow CZTS films is carried out in this investigation to explore the possibility of improving the quality of the films using the inexpensive electrodeposition technique. Mainly in both methods, potentiostatic electrodeposition technique is adopted for growing CZTS thin films. In both methods, growth conditions of the CZTS films are optimized after measuring the photoresponses in a photoelectrochemical (PEC) cell of the films that resulted at the end of each deposition step. The observed structural and optoelectronic properties of the films reveal that, in general, structurally good and photoactive CZTS films can be prepared using both methods. Moreover, photoresponse and Mott–Schottky measurements on CZTS films in a PEC reveal that CZTS films prepared using the single‐step electrodeposition have better photoactive properties and improved doping densities. This important finding shows that when developing CZTS‐based solar cells using the inexpensive electrodeposition technique, single‐step electrodeposition is more advantageous.

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“…Figure 3 b shows the Raman spectra of the samples annealed without sulfur. CZTS peaks can be noticed in the three films at 288, 336, 365, and 374 cm −1 [ 36 , 37 ]; however, all the samples contain a strong peak at 474 cm −1 and a smaller one at 264 cm −1 , indicating the presence of CuS [ 33 ]. In addition, a third phase is also detected in the films at 303 cm −1 and can be associated with the CTS phase [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Cu2ZnSnS4 Thin Films Obtained by Combined Magnetron Sputtering and Pulsed Laser Deposition

et al. 2021

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Cu2ZnSnS4 (CZTS) is a complex quaternary material, and obtaining a single-phase CZTS with no secondary phases is known to be challenging and dependent on the production technique. This work involves the synthesis and characterization of CZTS absorber layers for solar cells. Thin films were deposited on Si and glass substrates by a combined magnetron sputtering (MS) and pulsed laser deposition (PLD) hybrid system, followed by annealing without and with sulfur powder at 500 °C under argon (Ar) flow. Three different Cu2S, SnS2, and ZnS targets were used each time, employing a different target for PLD and the two others for MS. The effect of the different target arrangements and the role of annealing and/or sulfurization treatment were investigated. The characterization of the absorber films was performed by grazing incidence X-ray diffraction (GIXRD), X-ray reflectometry (XRR), Raman spectroscopy, scanning electron microscopy, and regular transmission spectroscopy. The film with ZnS deposited by PLD and SnS2 and Cu2S by MS was found to be the best for obtaining a single CZTS phase, with uniform surface morphology, a nearly stoichiometric composition, and an optimal band gap of 1.40 eV. These results show that a new method that combines the advantages of both MS and PLD techniques was successfully used to obtain single-phase Cu2ZnSnS4 films for solar cell applications.

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Towards phase pure kesterite Cu2ZnSnS4 absorber layers growth via single step free sulfurization electrodeposition under a fix applied potential on Mo substrate

Cited by 26 publications

References 33 publications

Study of kesterite Cu₂ZnSnS₄ (CZTS) thin films deposited by spray technique for photovoltaic applications

Study of kesterite Cu₂ZnSnS₄ (CZTS) thin films deposited by spray technique for photovoltaic applications

A Comparative Study: Sequential and Single‐Step‐Electrodeposited CZTS Thin Films

Synthesis and Characterization of Cu2ZnSnS4 Thin Films Obtained by Combined Magnetron Sputtering and Pulsed Laser Deposition

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Towards phase pure kesterite Cu2ZnSnS4 absorber layers growth via single step free sulfurization electrodeposition under a fix applied potential on Mo substrate

Cited by 26 publications

References 33 publications

Study of kesterite Cu2ZnSnS4 (CZTS) thin films deposited by spray technique for photovoltaic applications

Study of kesterite Cu2ZnSnS4 (CZTS) thin films deposited by spray technique for photovoltaic applications

A Comparative Study: Sequential and Single‐Step‐Electrodeposited CZTS Thin Films

Synthesis and Characterization of Cu2ZnSnS4 Thin Films Obtained by Combined Magnetron Sputtering and Pulsed Laser Deposition

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Product

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Study of kesterite Cu₂ZnSnS₄ (CZTS) thin films deposited by spray technique for photovoltaic applications

Study of kesterite Cu₂ZnSnS₄ (CZTS) thin films deposited by spray technique for photovoltaic applications