Cu2ZnSnS4 thin film solar cells from electroplated precursors

Novel low-cost perspective

A. Ennaoui, M. Lux-Steiner, A. Weber, D. Abou-Ras, I. Kötschau, H. W. Schock, R. Schurr, A. Hölzing, S. Jost, R. Hock, T. Voß, J. Schulze, A. Kirbs

Research output: Contribution to journalArticle

370 Citations (Scopus)

Abstract

Thin-film solar cells based on Cu2ZnSnS4 (CZTS) absorbers were fabricated successfully by solid-state reaction in H2S atmosphere of electrodeposited Cu-Zn-Sn precursors. These ternary alloys were deposited in one step from a cyanide-free alkaline electrolyte containing Cu(II), Zn(II) and Sn(IV) metal salts on Mo-coated glass substrates. The solar cell was completed by a chemical bath-deposited CdS buffer layer and a sputtered i-ZnO/ZnO:Al bilayer. The best solar cell performance was obtained with Cu-poor samples. A total area (0.5 cm2) efficiency of 3.4% is achieved (Voc = 563 mV, jsc = 14.8 mA/cm2, FF = 41%) with a maximum external quantum efficiency (EQE) of 80%. The estimated band-gap energy from the external quantum efficiency (EQE) measurements is about 1.54 eV. Electron backscatter-diffraction maps of cross-section samples revealed CZTS grain sizes of up to 10 μm. Elemental distribution maps of the CZTS absorber show Zn-rich precipitates, probably ZnS, and a Zn-poor region, presumably Cu2SnS3, close to the interface Mo/CZTS.

Original languageEnglish
Pages (from-to)2511-2514
Number of pages4
JournalThin Solid Films
Volume517
Issue number7
DOIs
Publication statusPublished - 2 Feb 2009
Externally publishedYes

Fingerprint

Quantum efficiency
Solar cells
solar cells
Ternary alloys
quantum efficiency
absorbers
Cyanides
Buffer layers
thin films
Solid state reactions
Electron diffraction
Electrolytes
Costs
Precipitates
Energy gap
Salts
Metals
ternary alloys
cyanides
Glass

Keywords

  • Cu-poor
  • CuZnSnS
  • Electroplating
  • Precursor sulfurisation
  • Solar-cell

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Ennaoui, A., Lux-Steiner, M., Weber, A., Abou-Ras, D., Kötschau, I., Schock, H. W., ... Kirbs, A. (2009). Cu2ZnSnS4 thin film solar cells from electroplated precursors: Novel low-cost perspective. Thin Solid Films, 517(7), 2511-2514. https://doi.org/10.1016/j.tsf.2008.11.061

Cu2ZnSnS4 thin film solar cells from electroplated precursors : Novel low-cost perspective. / Ennaoui, A.; Lux-Steiner, M.; Weber, A.; Abou-Ras, D.; Kötschau, I.; Schock, H. W.; Schurr, R.; Hölzing, A.; Jost, S.; Hock, R.; Voß, T.; Schulze, J.; Kirbs, A.

In: Thin Solid Films, Vol. 517, No. 7, 02.02.2009, p. 2511-2514.

Research output: Contribution to journalArticle

Ennaoui, A, Lux-Steiner, M, Weber, A, Abou-Ras, D, Kötschau, I, Schock, HW, Schurr, R, Hölzing, A, Jost, S, Hock, R, Voß, T, Schulze, J & Kirbs, A 2009, 'Cu2ZnSnS4 thin film solar cells from electroplated precursors: Novel low-cost perspective', Thin Solid Films, vol. 517, no. 7, pp. 2511-2514. https://doi.org/10.1016/j.tsf.2008.11.061
Ennaoui, A. ; Lux-Steiner, M. ; Weber, A. ; Abou-Ras, D. ; Kötschau, I. ; Schock, H. W. ; Schurr, R. ; Hölzing, A. ; Jost, S. ; Hock, R. ; Voß, T. ; Schulze, J. ; Kirbs, A. / Cu2ZnSnS4 thin film solar cells from electroplated precursors : Novel low-cost perspective. In: Thin Solid Films. 2009 ; Vol. 517, No. 7. pp. 2511-2514.
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