Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/210217
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Band gap tuning of solution-processed ferroelectric perovskite BiFe1-xCoxO3 thin films

AuthorsMachado, Pamela; Scigaj, Mateusz CSIC ORCID; Gázquez, Jaume CSIC ORCID; Rueda, Estel; Sánchez-Díaz, A.; Fina, Ignasi CSIC ORCID CVN ; Gibert Roca, Martí; Puig Molina, Teresa CSIC ORCID ; Obradors, Xavier CSIC ORCID; Campoy Quiles, Mariano CSIC ORCID ; Coll, Mariona CSIC ORCID
Issue Date6-Jun-2019
PublisherACS Publications
CitationChemistry of Materials 31(3):947–954 (2019)
AbstractFerroelectric perovskite oxides are emerging as a promising photoactive layer for photovoltaic applications because of their very high stability and their alternative ferroelectricity-related mechanism for solar energy conversion that could lead to extraordinarily high efficiencies. One of the biggest challenges so far is to reduce their band gap toward the visible region while simultaneously retaining ferroelectricity. To address these two issues, herein an elemental composition engineering of BiFeO3 is performed by substituting Fe by Co cations, as a means to tune the characteristics of the transition metal–oxygen bond. We demonstrate by solution processing the formation of epitaxial, pure phase, and stable BiFe1–xCoxO3 thin films for x ≤ 0.3 and film thickness up to 100 nm. Importantly, the band gap can be tuned from 2.7 to 2.3 eV upon cobalt substitution while simultaneously enhancing ferroelectricity. As a proof of concept, nonoptimized vertical devices have been fabricated and, reassuringly, the electrical photoresponse in the visible region of the Co-substituted phase is improved with respect to the unsubstituted oxide
Publisher version (URL)https://doi.org/10.1021/acs.chemmater.8b04380
URIhttp://hdl.handle.net/10261/210217
DOI10.1021/acs.chemmater.8b04380
ISSN0897-4756
E-ISSN1520-5002
Appears in Collections:(ICMAB) Comunicaciones congresos




Files in This Item:
File Description SizeFormat
Band_Gap_Tuning_Solution-.pdfPublisher's version1,89 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

CORE Recommender

PubMed Central
Citations

2
checked on Apr 26, 2024

SCOPUSTM   
Citations

73
checked on Jul 21, 2024

WEB OF SCIENCETM
Citations

63
checked on Feb 23, 2024

Page view(s)

162
checked on Jul 22, 2024

Download(s)

209
checked on Jul 22, 2024

Google ScholarTM

Check

Altmetric

Altmetric


Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.