Graphene-based electrodes for silicon heterojunction solar cell technology

Torres, Ignacio; Fernández, Susana; Fernández Vallejo, Montserrat; Arnedo Gil, Israel; Gandía, José Javier

Publication:
Graphene-based electrodes for silicon heterojunction solar cell technology

dc.contributor.author	Torres, Ignacio	es_ES
dc.contributor.author	Fernández, Susana	es_ES
dc.contributor.author	Fernández Vallejo, Montserrat
dc.contributor.author	Arnedo Gil, Israel
dc.contributor.author	Gandía, José Javier	es_ES
dc.contributor.department	Ingeniería Eléctrica, Electrónica y de Comunicación	es_ES
dc.contributor.department	Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren	eu
dc.contributor.funder	Gobierno de Navarra / Nafarroako Gobernua	es
dc.date.accessioned	2022-01-19T08:43:49Z
dc.date.available	2022-01-19T08:43:49Z
dc.date.issued	2021
dc.description.abstract	Transparent conductive electrodes based on graphene have been previously proposed as an attractive candidate for optoelectronic devices. While graphene alone lacks the antireflectance properties needed in many applications, it can still be coupled with traditional transparent conductive oxides, further enhancing their electrical performance. In this work, the effect of combining indium tin oxide with between one and three graphene monolayers as the top electrode in silicon heterojunction solar cells is analyzed. Prior to the metal grid deposition, the electrical conductance of the hybrid electrodes was evaluated through reflection-mode terahertz time-domain spectroscopy. The obtained conductance maps showed a clear electrical improvement with each additional graphene sheet. In the electrical characterization of the finished solar cells, this translated to a meaningful reduction in the series resistance and an increase in the devices’ fill factor. On the other hand, each additional sheet absorbs part of the incoming radiation, causing the short circuit current to simultaneously decrease. Consequently, additional graphene monolayers past the first one did not further enhance the efficiency of the reference cells. Ultimately, the increase obtained in the fill factor endorses graphene-based hybrid electrodes as a potential concept for improving solar cells’ efficiency in future novel designs.	en
dc.description.sponsorship	This research was funded by DIGRAFEN, grant number ENE2017–88065-C2-2-R. The APC was funded by the Ministry of Economy, Industry and Competitiveness from Spain. das-Nano and UPNA would also like to acknowledge the funding from the Government of Navarra and the European Regional Development Fund (ERDF), 2020 I + D projects: ref. 0011-1365-2020-000026 for das-Nano and ref. 0011-1365-2020-000045 for UPNA.	en
dc.format.extent	12 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.3390/ma14174833
dc.identifier.issn	1996-1944
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/41818
dc.language.iso	eng	en
dc.publisher	MDPI
dc.relation.ispartof	Materials, 14 (17)
dc.relation.publisherversion	http://doi.org/10.3390/ma14174833
dc.rights	© 2021 by the authors. Creative Commons Attribution 4.0 International	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess	en
dc.rights.accessRights	Acceso abierto / Sarbide irekia	es
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/
dc.subject	Graphene	en
dc.subject	ITO	en
dc.subject	Silicon heterojunction	en
dc.subject	Solar cells	en
dc.subject	Terahertz time-domain spectroscopy	en
dc.subject	Transparent conductive electrodes	en
dc.title	Graphene-based electrodes for silicon heterojunction solar cell technology	en
dc.type	info:eu-repo/semantics/article	en
dc.type	Artículo / Artikulua	es
dc.type.version	info:eu-repo/semantics/publishedVersion	en
dc.type.version	Versión publicada / Argitaratu den bertsioa	es
dspace.entity.type	Publication
relation.isAuthorOfPublication	648cea02-a8e5-4f0c-b73f-a8429c81ce87
relation.isAuthorOfPublication	cf04fc56-96b9-442d-9db1-a935ebea6736
relation.isAuthorOfPublication.latestForDiscovery	648cea02-a8e5-4f0c-b73f-a8429c81ce87