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

Authors :
Taisiia Berestok
Pablo Guardia
Sònia Estradé
Jordi Llorca
Francesca Peiró
Andreu Cabot
Stephanie L. Brock
Source :
Nanomaterials, Vol 8, Iss 4, p 220 (2018)
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

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.

Details

Language :
English
ISSN :
20794991
Volume :
8
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Nanomaterials
Publication Type :
Academic Journal
Accession number :
edsdoj.57759c5a45084c0e867bfef157a78afd
Document Type :
article
Full Text :
https://doi.org/10.3390/nano8040220