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Surfactant-free CZTS nanoparticles as building blocks for low-cost solar cell absorbers

Zaberca, Oana and Oftinger, Frédéric and Chane-Ching, Jean-Yves and Datas, Lucien and Lafond, Alain and Puech, Pascal and Balocchi, Andréa and Lagarde, Delphine and Marie, Xavier Surfactant-free CZTS nanoparticles as building blocks for low-cost solar cell absorbers. (2012) Nanotechnology, 23 (18). 1-11. ISSN 0957-4484

(Document in English)

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Official URL: http://dx.doi.org/10.1088/0957-4484/23/18/185402


A process route for the fabrication of solvent-redispersible, surfactant-free Cu2ZnSnS4 (CZTS) nanoparticles has been designed with the objective to have the benefit of a simple sulfide source which advantageously acts as (i) a complexing agent inhibiting crystallite growth, (ii) a surface additive providing redispersion in low ionic strength polar solvents and (iii) a transient ligand easily replaced by an carbon-free surface additive. This multifunctional use of the sulfide source has been achieved through a fine tuning of((Cu2+)a(Zn2+)b(Sn4+)c(Tu)d(OH?)e)t+, Tu = thiourea) oligomers, leading after temperature polycondensation and S2- exchange to highly concentrated (c > 100 g l-1), stable, ethanolic CZTS dispersions. The good electronic properties and low-defect concentration of the sintered, crack-free CZTSe films resulting from these building blocks was shown by photoluminescence investigation, making these building blocks interesting for low-cost, high-performance CZTSe solar cells.

Item Type:Article
Additional Information:Thanks to IOPscience editor. The definitive version is available at http://iopscience.iop.org The original PDF of the article can be found at IOPscience website : http://iopscience.iop.org/0957-4484/23/18/185402
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université de Nantes (FRANCE)
Laboratory name:
Ecole des Beaux Arts de la Réunion, Région Réunion - Université Paul Sabatier, Université de Toulouse, France
Deposited On:25 Jun 2015 12:03

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