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Optimizing sulfurisation conditions in the fabrication of Cu 2ZnSnS4 absorber layers from electroplated precursors


Reference:

Scragg, J. J., Wolverson, D., Guillaume, Z. and Peter, L. M., 2010. Optimizing sulfurisation conditions in the fabrication of Cu 2ZnSnS4 absorber layers from electroplated precursors. In: Photovoltaic Materials and Manufacturing Issues II. Warrendale, PA.: Materials Research Society.

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Abstract

Using direct photoelectrochemical measurement of the photocurrent obtained from Cu2ZnSnS4 (CZTS) absorber layers made by a two-stage electroplating-sulfurisation process, the influence of processing conditions (temperature, time, and pressure) on material quality was investigated with a view to understanding the long sulfurisation times usually found in the literature. The improvement in photocurrent due to KCN etching was also studied, and seems to be due both to removal of surface phases and also slower etching of the bulk material. The optimum sulfurisation time was found to be around 50 minutes, despite evidence that sulfur incorporation and phase formation are complete within 5 minutes. Slow grain growth was suggested as a rate-limiting factor, and a rate constant was derived based on a simple model.

Details

Item Type Book Sections
CreatorsScragg, J. J., Wolverson, D., Guillaume, Z. and Peter, L. M.
DepartmentsFaculty of Science > Chemistry
Faculty of Science > Physics
StatusPublished
ID Code27387
Additional Information2009 MRS Fall Meeting, 29 November - 3 December 2009, Boston, MA, United States.

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