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Open AccessArticle

CuGaS2 and CuGaS2–ZnS Porous Layers from Solution-Processed Nanocrystals

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Catalonia Institute for Energy Research—IREC, Sant Adrià de Besòs, 08930 Barcelona, Spain
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LENS-MIND, Departament d’Enginyeries i Electrònica i Institut de Nanociència i Nanotecnologia (In2UB), Universitat de Barcelona, 08028 Barcelona, Spain
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Institute of Energy Technologies, Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and Engineering. Universitat Politècnica de Catalunya, EEBE, Eduard Maristany 16, 08019 Barcelona, Spain
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ICREA, 08010 Barcelona, Spain
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Department of Chemistry, Wayne State University, Detroit, MI 48202, USA
*
Authors to whom correspondence should be addressed.
Nanomaterials 2018, 8(4), 220; https://doi.org/10.3390/nano8040220
Received: 12 February 2018 / Revised: 26 March 2018 / Accepted: 4 April 2018 / Published: 5 April 2018
The manufacturing of semiconducting films using solution-based approaches is considered a low cost alternative to vacuum-based thin film deposition strategies. An additional advantage of solution processing methods is the possibility to control the layer nano/microstructure. Here, we detail the production of mesoporous CuGaS2 (CGS) and ZnS layers from spin-coating and subsequent cross-linking through chalcogen-chalcogen bonds of properly functionalized nanocrystals (NCs). We further produce NC-based porous CGS/ZnS bilayers and NC-based CGS–ZnS composite layers using the same strategy. Photoelectrochemical measurements are used to demonstrate the efficacy of porous layers, and particularly the CGS/ZnS bilayers, for improved current densities and photoresponses relative to denser films deposited from as-produced NCs. View Full-Text
Keywords: aerogel; xerogel; porous layer; CuGaS2/ZnS; photoresponse; nanomaterial aerogel; xerogel; porous layer; CuGaS2/ZnS; photoresponse; nanomaterial
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MDPI and ACS Style

Berestok, T.; Guardia, P.; Estradé, S.; Llorca, J.; Peiró, F.; Cabot, A.; Brock, S.L. CuGaS2 and CuGaS2–ZnS Porous Layers from Solution-Processed Nanocrystals. Nanomaterials 2018, 8, 220.

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