Journal
NANOMATERIALS
Volume 8, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/nano8040220
Keywords
aerogel; xerogel; porous layer; CuGaS2/ZnS; photoresponse; nanomaterial
Categories
Funding
- European Regional Development Funds
- Spanish MINECO project SEHTOP [ENE2016-77798-C4-3-R]
- FI-AGAUR Research Fellowship Program, Generalitat de Catalunya [2015 FI_B 00744]
- People Programme (Marie Curie Actions) of the FP7 European Union Program (TECNIOspring grant) [600388]
- U.S. National Science Foundation [CHE-1361741]
- ICREA Academia program
- [MINECO/FEDER ENE2015-63969-R]
- [GC 2017 SGR 128]
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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.
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