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Title: | Effect of ammonium sulfide treatments on the surface properties of Cu2ZnSnSe4 thin films | Authors: | Buffiere, Marie BRAMMERTZ, Guy El Mel, Abdel-Aziz Barreau, Nicolas MEURIS, Marc POORTMANS, Jef |
Issue Date: | 2017 | Publisher: | ELSEVIER SCIENCE SA | Source: | THIN SOLID FILMS, 633(SI), p. 135-140 | Abstract: | In this contribution, we report on the impact of ammonium sulfide ((NH4)(2)S-x) chemical treatments done at room temperature on the surface properties of Cu2ZnSnSe4 (CZTSe) thin film. The first approach is based on the immersion of the absorber layer in a (NH4)(2)S-x solution (20 wt.%). This method results in the preferential etching of Se, Sn and Zn atoms from the absorber surface. After a treatment time of 1 min, the performances of the solar cells are found to be improved. The second approach consists in the exposure of the CZTSe layer to ammonium sulfide vapors. In this case, it was found that the progressive sulfurization of the surface of the absorber leads to the decomposition of the CZTSe phase into Sn(S,Se)(x) and Se-0 secondary phases. As a consequence, the short circuit current of the corresponding solar cells is reduced. (C) 2016 Elsevier B.V. All rights reserved. | Notes: | [Buffiere, Marie; Poortmans, Jef] IMEC, Partner Solliance, Kapeldreef 75, B-3001 Leuven, Belgium. [Buffiere, Marie; El Mel, Abdel-Aziz; Barreau, Nicolas] Univ Nantes, CNRS, Inst Mat Jean Rouxel, 2 Rue Houssiniere BP 32229, F-44322 Nantes 3, France. [Buffiere, Marie] Hamad Ben Khalifa Univ, Qatar Fdn, QEERI, Doha, Qatar. [Brammertz, Guy; Meuris, Marc] IMEC, Div IMOMEC, Partner Solliance, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Brammertz, Guy; Meuris, Marc; Poortmans, Jef] Hasselt Univ, Inst Mat Res IMO, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Poortmans, Jef] Katholieke Univ Leuven, ESAT ELECTA, B-3000 Leuven, Belgium. | Keywords: | Solar cells; Copper zinc tin selenide; Kesterite; Chemical treatment; Secondary phases; Decomposition;solar cells; copper zinc tin selenide; kesterite; chemical treatment; secondary phases; decomposition | Document URI: | http://hdl.handle.net/1942/24372 | ISSN: | 0040-6090 | e-ISSN: | 1879-2731 | DOI: | 10.1016/j.tsf.2016.09.011 | ISI #: | 000404802300027 | Rights: | (C) 2016 Elsevier B.V. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2018 |
Appears in Collections: | Research publications |
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buffiere 1.pdf Restricted Access | Published version | 637.28 kB | Adobe PDF | View/Open Request a copy |
Buffiere.pdf | Peer-reviewed author version | 548.59 kB | Adobe PDF | View/Open |
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