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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
materials science
Cu2ZnSnS4 thin film solar cells from electroplated precursors: Novel low-cost perspective
Thin Solid Films, Volume 517, No. 7, Year 2009
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Description
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. © 2008 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Ennaoui, Ahmed
Germany, Berlin
Helmholtz-zentrum Berlin Für Materialien Und Energie Hzb
Lux Steiner, Martha Ch H.
Germany, Berlin
Helmholtz-zentrum Berlin Für Materialien Und Energie Hzb
Abou-Ras, Daniel
Germany, Berlin
Helmholtz-zentrum Berlin Für Materialien Und Energie Hzb
Schock, Hans Werner
Germany, Berlin
Helmholtz-zentrum Berlin Für Materialien Und Energie Hzb
Schulze, Jörg F.
Unknown Affiliation
Statistics
Citations: 409
Authors: 5
Affiliations: 2
Identifiers
Doi:
10.1016/j.tsf.2008.11.061
ISSN:
00406090