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Water-soluble, heterometallic chalcogenide oligomers as building blocks for functional films

Chane-Ching, Jean-Yves and Perrin, Lionel and Puech, Pascal and Bourdon, Valérie and Foncrose, Vincent and Balocchi, Andréa and Marie, Xavier and Lavedan, Pierre Water-soluble, heterometallic chalcogenide oligomers as building blocks for functional films. (2016) Inorganic Chemistry Frontiers, 3 (5). 689-701. ISSN 2052-1553

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Official URL: https://doi.org/10.1039/C5QI00250H

Abstract

Monometallic chalcogenide aqueous complexes such as (Sn2S6)4− and (Sn4S10)4− are widely used as functional ligands with applications in nano-electronics and solar cells. We propose a general process route to the formation of all-inorganic, heterometallic chalcogenide oligomers, thus expanding the range of these functional aqueous ligands. From electrospray ionization mass spectrometry, tetramers were shown to be the most predominant oligomers synthesized in Sn(IV)–Zn(II)–S(II), Sn(IV)–Zn(II)–Se(II) and Sn(IV)–Ga(III)–S(II) systems. While tetramers possessing exclusively one Zn cation were identified in the Sn(IV)–Zn(II)–S(II) system, the full range of solid solutions was achieved for (Sna–Gab–Sc)t− oligomers with 1 ≤ a ≤ 4. Using in situ characterization by 119Sn liquid NMR and Raman spectroscopy, supported by DFT calculations, we demonstrate that the various tetramers adopt a compact adamantane-like structure. The charge of the heterometallic oligomers was shown to be controlled by the doping cation valence and the chalcogenide anion deficiency in the tetramers. These water-soluble heterometallic chalcogenide oligomers can serve as ligands, residue-free dispersants or building blocks for functional film fabrication. Using these oligomers, we report here the fabrication of chalcogenide solar cells employing environmentally friendly, all-aqueous, (Sna–Znb–Sc)t−-capped CZTS nanocrystal inks.

Item Type:Article
HAL Id:hal-02419083
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Supérieure de Chimie Physique et Electronique de Lyon (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Other partners > Institut National des Sciences Appliquées de Lyon - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université Claude Bernard-Lyon I - UCBL (FRANCE)
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Deposited By: Yves MOMBOISSE
Deposited On:19 Dec 2019 11:00

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