One-step deposition of Cu2ZnSnS4 thin films for solar cells

Cao, Meng; Li, L.; Zhang, B.L.; Huang, Jian; Wang, L.J.; Shen, Yue; Sun, Yan; Jiang, Jinchun; Hu, Guangfu

doi:10.1016/j.solmat.2013.05.039

Cited by 42 publications

(17 citation statements)

References 30 publications

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“…The optical gap of the deposit was evaluated by the extrapolation to zero photocurrent of the (Iph*h*ν) 0.5 vs. h*ν, assuming non-direct optical transitions (see inset of the figure). A value of about 1.5 eV was obtained, very close to 1.48 eV recently reported in [14] for CZTS thin films fabricated by chemical bath deposition having structure and composition of the kesterite. This result appears of some value for the engineering of CZTS, because it indicates that it is not mandatory to achieve a well-defined composition for getting the band gap value usually considered as optimum for this material.…”

Section: One-step Electrodeposition Of Czts Thin Filmssupporting

confidence: 87%

“…Sputtering by atomic beam [2] Sputtering by radio frequency magnetron [4,5] Sulphurization of either electron-beam-evaporated or electrodeposited precursors [6,7] Photochemical deposition [8] Spray pyrolysis [9] Pulsed laser deposition [10,11] Sol-gel sulphurization [12] Chemical synthesis [13,14] Review on non-vacuum processes to fabricate thin films of CZTS with kesterite structure and composition has been published [15] …”

Section: Synthesis Methods Referencesmentioning

confidence: 99%

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One-Step Electrodeposition of CZTS for Solar Cell Absorber Layer

Farinella¹,

Livreri²,

Piazza³

et al. 2015

Electroplating of Nanostructures

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CZTS thin films were obtained by one-step electrochemical deposition from aqueous solution at room temperature. Films were deposited on two different substrates, ITO on PET, and electropolished Mo. Differently from previous studies focusing exclusively on the formation of kesterite (Cu 4 ZnSnS 4 ), here, the synthesis of a phase with this exact composition was not considered as the unique objective. Really, starting from different baths, amorphous semiconducting layers containing copper-zinc-tinsulphur with atomic fraction Cu 0.592 Zn 0.124 Sn 0.063 S 0.221 and Cu 0.415 Zn 0.061 Sn 0.349 S 0.175 , were potentiostatically deposited. Due to the amorphous nature, it was not possible to detect if one or more phases were formed. By photoelectrochemical measurements, we evaluated optical gap values between 1.5 eV, similar to that assigned to kesterite, and 1.0 eV. Reproducibility and adhesion to the substrate were solved by changing S with Se. Preliminary results showed that an amorphous p-type layer, having atomic fraction Cu 0.434 Zn 0.036 Sn 0.138 Se 0.392 and an optical gap of 1.33 eV, can be obtained by one-step electrochemical deposition.

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Section: One-step Electrodeposition Of Czts Thin Filmssupporting

confidence: 87%

Section: Synthesis Methods Referencesmentioning

confidence: 99%

One-Step Electrodeposition of CZTS for Solar Cell Absorber Layer

Farinella¹,

Livreri²,

Piazza³

et al. 2015

Electroplating of Nanostructures

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show abstract

“…According to previous SEM results, higher sulfurizing temperature would lead to phase purification and crystallinity improvement, which may probably contributed to the band gap reduction. In all, the band gap value in the range of 1.4-1.5 eV [25,30,33] matches well with solar spectrum and thus quite suitable for developing CZTS-based single junction solar cells.…”

Section: Band Gap Estimation From Uv-vis Absorption Spectrasupporting

confidence: 59%

“…, Sn 4? , and S 2-, for the four elements in CZTS fibers, according to the previously reports[30,31]. The existence of Cu 1?…”

mentioning

confidence: 54%

Morphology and properties evolution of kesterite Cu2ZnSnS4 microfibers synthesized via electrospinning method

Song

2015

J Porous Mater

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Solar cells and related key materials are still among the most interesting researching field. In this work, kesterite Cu 2 ZnSnS 4 (CZTS) cross-linked fibers and dense films, which are promising candidates for active layers used in the third generation solar cells, are developed via electrospinning following sulfurization at high temperature. Morphology dependence and properties evolution are investigated for the samples obtained by sulfurization in the temperature range of 450-600°C. Samples are characterized by scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, Raman and X-ray photoelectronic spectroscopy, and UV-Vis absorbance spectra. It is found that, with the sulfurization temperature increasing, morphologies develop from isolated CZTS fibers to interconnected fibers, and finally forming a submicron flake composed dense films, accompanying a band gap evolution from 1.49 to 1.44 eV, just by simply adjusting the solutes concentration and vulcanization parameters.

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“…Several vacuum and non-vacuum based techniques have been reported for the synthesis of CZTS thin films such as sputtering, pulsed laser deposition, coevaporation, hydrothermal, electrodeposition, sol-gel, drop casting, etc. [2][3][4][5][6][7]. The non-vacuum based techniques; especially the solution chemical method offers handy, simple, compact equipment's, low wastage of raw materials with low capital investment [8].…”

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confidence: 99%

A mild hydrothermal route to synthesis of CZTS nanoparticle inks for solar cell applications

Vanalakar

Agwane

Gang

et al. 2015

Phys. Status Solidi C

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Cu2ZnSnS4 (CZTS) is a promising thin film absorber material for low cost solar cell applications. Its absorption coefficient (∼ 104 cm‐1), crystal structure and band gap energies (∼1.5 eV) are similar to those of Cu(In,Ga)Se2 (CIGS), one of the most studied and flourishing thin film solar cell absorber materials. However, unlike CIGS, which requires the expensive and rare elements; In and Ga, CZTS is composed of reasonably priced and abundant elements like Zn and Sn. In the present investigation, kesterite CZTS nanoparticle inks were obtained by a hydrothermal process using Cu, Zn and Sn chlorides, and Na sulfide. The synthesized CZTS nanoparticles were characterized using optical absorption, X‐ray powder diffraction (XRD), energy dispersive spectroscopy (EDS), micro‐Raman spectroscopy, high‐resolution transmission electron microscopy (HRTEM), and X‐ray photoelectron spectroscopy (XPS). The optical and morphological properties demonstrated that the prepared nanoparticles have strong absorption in 300−550 nm range with band gap energy of 1.55 eV with an average particle size of 20 nm. The X‐ray and micro‐Raman analysis revealed that the synthesized CZTS nanoparticles have the phase pure kesterite structure. We believe that our synthetic method will be helpful for low‐cost and efficient thin film photovoltaic technology. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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One-step deposition of Cu2ZnSnS4 thin films for solar cells

Cited by 42 publications

References 30 publications

One-Step Electrodeposition of CZTS for Solar Cell Absorber Layer

One-Step Electrodeposition of CZTS for Solar Cell Absorber Layer

Morphology and properties evolution of kesterite Cu2ZnSnS4 microfibers synthesized via electrospinning method

A mild hydrothermal route to synthesis of CZTS nanoparticle inks for solar cell applications

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