Colloidal synthesis of wurtzite Cu2CoSnS4 nanocrystals and the photoresponse of spray-deposited thin films

Monodisperse nanocrystals of a new wurtzite phase of Cu2CoSnS4 (CCTS) have been synthesized using a simple solution-based method. The wurtzite CCTS nanocrystals grow in the shape of nanorods with an average length of 32 ± 2.0 and width of 16 ± 1.5 nm. The more stable stannite phase of CCTS has also...

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Veröffentlicht in:Nanotechnology 2013-03, Vol.24 (10), p.105706-105706
Hauptverfasser: Zhang, Xiaoyan, Bao, Ningzhong, Lin, Baoping, Gupta, Arunava
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Sprache:eng
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Zusammenfassung:Monodisperse nanocrystals of a new wurtzite phase of Cu2CoSnS4 (CCTS) have been synthesized using a simple solution-based method. The wurtzite CCTS nanocrystals grow in the shape of nanorods with an average length of 32 ± 2.0 and width of 16 ± 1.5 nm. The more stable stannite phase of CCTS has also been synthesized by increasing the reaction temperature or by a post-high-temperature annealing process. The band gap of wurtzite CCTS nanocrystals is determined to be 1.58 eV. Thin films prepared from the nanocrystal suspension display photoresponse behaviour with white light from a solar simulator, suggesting the potential use of CCTS as an active layer in low-cost thin-film solar cells.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/24/10/105706