Graphene-based autonomous pyroelectric system for near-field energy conversion

In the close vicinity of a hot solid, at distances smaller than the thermal wavelength, a strong electromagnetic energy density exists because of the presence of evanescent field. Here we introduce a many-body conversion principle to harvest this energy using graphene-based pyroelectric conversion d...

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Detalles Bibliográficos
Autores: Latella,Ivan, Ben Abdallah, Philippe
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/180981
Acceso en línea:https://hdl.handle.net/2445/180981
Access Level:acceso abierto
Palabra clave:Transferència radiativa
Piroelectricitat
Grafè
Radiative transfer
Pyroelectricity
Graphene
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spelling Graphene-based autonomous pyroelectric system for near-field energy conversionLatella,IvanBen Abdallah, PhilippeTransferència radiativaPiroelectricitatGrafèRadiative transferPyroelectricityGrapheneIn the close vicinity of a hot solid, at distances smaller than the thermal wavelength, a strong electromagnetic energy density exists because of the presence of evanescent field. Here we introduce a many-body conversion principle to harvest this energy using graphene-based pyroelectric conversion devices made with an active layer encapsulated between two graphene field-effect transistors which are deposited on the source and on the cold sink. By tuning the bias voltage applied to the gates of these transistors, the thermal state and the spontaneous polarization of the active layer can be controlled at kHz frequencies. We demonstrate that the power density generated by these conversion systems can reach 130mWcm−2 using pyroelectric Ericsson cycles, a value which surpasses the current production capacity of near-field thermophotovoltaic conversion devices by more than three orders of magnitude with low grade heat sources (<500K) and small temperature differences (Δ∼100).Nature Publishing Group2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/180981Articles publicats en revistes (Física de la Matèria Condensada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1038/s41598-021-98656-8Scientific Reports, 2021, vol. 11, num. 19489https://doi.org/10.1038/s41598-021-98656-8info:eu-repo/grantAgreement/EC/H2020/892718cc-by (c) Latella,Ivan et al., 2021https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1809812026-05-27T06:46:51Z
dc.title.none.fl_str_mv Graphene-based autonomous pyroelectric system for near-field energy conversion
title Graphene-based autonomous pyroelectric system for near-field energy conversion
spellingShingle Graphene-based autonomous pyroelectric system for near-field energy conversion
Latella,Ivan
Transferència radiativa
Piroelectricitat
Grafè
Radiative transfer
Pyroelectricity
Graphene
title_short Graphene-based autonomous pyroelectric system for near-field energy conversion
title_full Graphene-based autonomous pyroelectric system for near-field energy conversion
title_fullStr Graphene-based autonomous pyroelectric system for near-field energy conversion
title_full_unstemmed Graphene-based autonomous pyroelectric system for near-field energy conversion
title_sort Graphene-based autonomous pyroelectric system for near-field energy conversion
dc.creator.none.fl_str_mv Latella,Ivan
Ben Abdallah, Philippe
author Latella,Ivan
author_facet Latella,Ivan
Ben Abdallah, Philippe
author_role author
author2 Ben Abdallah, Philippe
author2_role author
dc.subject.none.fl_str_mv Transferència radiativa
Piroelectricitat
Grafè
Radiative transfer
Pyroelectricity
Graphene
topic Transferència radiativa
Piroelectricitat
Grafè
Radiative transfer
Pyroelectricity
Graphene
description In the close vicinity of a hot solid, at distances smaller than the thermal wavelength, a strong electromagnetic energy density exists because of the presence of evanescent field. Here we introduce a many-body conversion principle to harvest this energy using graphene-based pyroelectric conversion devices made with an active layer encapsulated between two graphene field-effect transistors which are deposited on the source and on the cold sink. By tuning the bias voltage applied to the gates of these transistors, the thermal state and the spontaneous polarization of the active layer can be controlled at kHz frequencies. We demonstrate that the power density generated by these conversion systems can reach 130mWcm−2 using pyroelectric Ericsson cycles, a value which surpasses the current production capacity of near-field thermophotovoltaic conversion devices by more than three orders of magnitude with low grade heat sources (<500K) and small temperature differences (Δ∼100).
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/180981
url https://hdl.handle.net/2445/180981
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1038/s41598-021-98656-8
Scientific Reports, 2021, vol. 11, num. 19489
https://doi.org/10.1038/s41598-021-98656-8
info:eu-repo/grantAgreement/EC/H2020/892718
dc.rights.none.fl_str_mv cc-by (c) Latella,Ivan et al., 2021
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Latella,Ivan et al., 2021
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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