Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5465938 | Thin Solid Films | 2017 | 20 Pages |
Abstract
An innovative approach has been demonstrated for the deposition of Cu2ZnSnSe4 (CZTSe) absorber layers. Using a unique, safe solvent combination, moving away from hydrazine, elemental Cu, Zn, Sn and S/Se can be fully dissolved at ambient conditions, with the composition easily controlled. The preparation and the spray deposition of these solutions are performed in air, allowing a quick, easy and inexpensive process. Upon selenisation, large crystals are observed which are identified as the CZTSe kesterite phase using X-ray diffraction and Raman, the latter showing no distinctive signs of any binary or ternary secondary phases. Using this method, CZTSe absorber layers have been prepared for use in thin-film solar cells reaching efficiency of 3.2%. With further device optimisation, improved device performance will be achieved.
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Authors
Carl S. Cooper, Panagiota Arnou, Lewis D. Wright, SoÅa UliÄná, John M. Walls, Andrei V. Malkov, Jake W. Bowers,