Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces

Autores
Grancini, Giulia; Viola, Daniele; Lee, Yonghui; Saliba, Michael; Paek, Sanghyun; Cho, Kyung Taek; Orlandi, Simonetta; Cavazzini, Marco; Fungo, Fernando Gabriel; Hossain, Mohammad I.; Belaidi, Abdelhak; Tabet, Nouar; Pozzi, Gianluca; Cerullo, Giulio; Nazeeruddin, Mohammad Khaja
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
With a power conversion efficiency (PCE) exceeding 22 %, perovskite solar cells (PSCs) have thrilled photovoltaic research. However, the interface behavior is still not understood and is a hot topic of research: different processes occur over a hierarchy of timescales, from femtoseconds to seconds, which makes perovskite interface physics intriguing. Herein, through femtosecond transient absorption spectroscopy with spectral coverage extending into the crucial IR region, the ultrafast interface-specific processes at standard and newly molecularly engineered perovskite interfaces in state-of-the-art PSCs are interrogated. Ultrafast interfacial charge injection occurs with a time constant of 100 fs, resulting in hot transfer from energetic charges and setting the timescale for the first step involved in the complex charge-transfer process. This is also true for 20 % efficient devices measured under real operation, for which the femtosecond injection is followed by a slower picosecond component. These findings provide compelling evidence for the femtosecond interfacial charge-injection step and demonstrate a robust method for the straightforward identification of interfacial non-equilibrium processes on the ultrafast timescale.
Fil: Grancini, Giulia. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Viola, Daniele. Politecnico di Milano; Italia
Fil: Lee, Yonghui. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Saliba, Michael. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Paek, Sanghyun. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Cho, Kyung Taek. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Orlandi, Simonetta. Consiglio Nazionale delle Ricerche; Italia
Fil: Cavazzini, Marco. Consiglio Nazionale delle Ricerche; Italia
Fil: Fungo, Fernando Gabriel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Hossain, Mohammad I.. Qatar Environment And Energy Research Institute; Qatar
Fil: Belaidi, Abdelhak. Qatar Environment And Energy Research Institute; Qatar
Fil: Tabet, Nouar. Qatar Environment And Energy Research Institute; Qatar
Fil: Pozzi, Gianluca. Consiglio Nazionale delle Ricerche; Italia
Fil: Cerullo, Giulio. Politecnico di Milano; Italia
Fil: Nazeeruddin, Mohammad Khaja. Ecole Polytechnique Federale de Lausanne; Suiza
Materia
INTERFACE PHYSICS
IR SPECTROSCOPY
PEROVSKITE SOLAR CELLS
PHOTOPHYSICS
ULTRAFAST SPECTROSCOPY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/72521
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/72521
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Femtosecond Charge-Injection Dynamics at Hybrid Perovskite InterfacesGrancini, GiuliaViola, DanieleLee, YonghuiSaliba, MichaelPaek, SanghyunCho, Kyung TaekOrlandi, SimonettaCavazzini, MarcoFungo, Fernando GabrielHossain, Mohammad I.Belaidi, AbdelhakTabet, NouarPozzi, GianlucaCerullo, GiulioNazeeruddin, Mohammad KhajaINTERFACE PHYSICSIR SPECTROSCOPYPEROVSKITE SOLAR CELLSPHOTOPHYSICSULTRAFAST SPECTROSCOPYhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1With a power conversion efficiency (PCE) exceeding 22 %, perovskite solar cells (PSCs) have thrilled photovoltaic research. However, the interface behavior is still not understood and is a hot topic of research: different processes occur over a hierarchy of timescales, from femtoseconds to seconds, which makes perovskite interface physics intriguing. Herein, through femtosecond transient absorption spectroscopy with spectral coverage extending into the crucial IR region, the ultrafast interface-specific processes at standard and newly molecularly engineered perovskite interfaces in state-of-the-art PSCs are interrogated. Ultrafast interfacial charge injection occurs with a time constant of 100 fs, resulting in hot transfer from energetic charges and setting the timescale for the first step involved in the complex charge-transfer process. This is also true for 20 % efficient devices measured under real operation, for which the femtosecond injection is followed by a slower picosecond component. These findings provide compelling evidence for the femtosecond interfacial charge-injection step and demonstrate a robust method for the straightforward identification of interfacial non-equilibrium processes on the ultrafast timescale.Fil: Grancini, Giulia. Ecole Polytechnique Federale de Lausanne; SuizaFil: Viola, Daniele. Politecnico di Milano; ItaliaFil: Lee, Yonghui. Ecole Polytechnique Federale de Lausanne; SuizaFil: Saliba, Michael. Ecole Polytechnique Federale de Lausanne; SuizaFil: Paek, Sanghyun. Ecole Polytechnique Federale de Lausanne; SuizaFil: Cho, Kyung Taek. Ecole Polytechnique Federale de Lausanne; SuizaFil: Orlandi, Simonetta. Consiglio Nazionale delle Ricerche; ItaliaFil: Cavazzini, Marco. Consiglio Nazionale delle Ricerche; ItaliaFil: Fungo, Fernando Gabriel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Hossain, Mohammad I.. Qatar Environment And Energy Research Institute; QatarFil: Belaidi, Abdelhak. Qatar Environment And Energy Research Institute; QatarFil: Tabet, Nouar. Qatar Environment And Energy Research Institute; QatarFil: Pozzi, Gianluca. Consiglio Nazionale delle Ricerche; ItaliaFil: Cerullo, Giulio. Politecnico di Milano; ItaliaFil: Nazeeruddin, Mohammad Khaja. Ecole Polytechnique Federale de Lausanne; SuizaWiley VCH Verlag2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72521Grancini, Giulia; Viola, Daniele; Lee, Yonghui; Saliba, Michael; Paek, Sanghyun; et al.; Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces; Wiley VCH Verlag; Chemphyschem; 18; 17; 9-2017; 2381-23891439-42351439-7641CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/cphc.201700492info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1002/cphc.201700492info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:13:53Zoai:ri.conicet.gov.ar:11336/72521instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:13:54.129CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
title Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
spellingShingle Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
Grancini, Giulia
INTERFACE PHYSICS
IR SPECTROSCOPY
PEROVSKITE SOLAR CELLS
PHOTOPHYSICS
ULTRAFAST SPECTROSCOPY
title_short Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
title_full Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
title_fullStr Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
title_full_unstemmed Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
title_sort Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
dc.creator.none.fl_str_mv Grancini, Giulia
Viola, Daniele
Lee, Yonghui
Saliba, Michael
Paek, Sanghyun
Cho, Kyung Taek
Orlandi, Simonetta
Cavazzini, Marco
Fungo, Fernando Gabriel
Hossain, Mohammad I.
Belaidi, Abdelhak
Tabet, Nouar
Pozzi, Gianluca
Cerullo, Giulio
Nazeeruddin, Mohammad Khaja
author Grancini, Giulia
author_facet Grancini, Giulia
Viola, Daniele
Lee, Yonghui
Saliba, Michael
Paek, Sanghyun
Cho, Kyung Taek
Orlandi, Simonetta
Cavazzini, Marco
Fungo, Fernando Gabriel
Hossain, Mohammad I.
Belaidi, Abdelhak
Tabet, Nouar
Pozzi, Gianluca
Cerullo, Giulio
Nazeeruddin, Mohammad Khaja
author_role author
author2 Viola, Daniele
Lee, Yonghui
Saliba, Michael
Paek, Sanghyun
Cho, Kyung Taek
Orlandi, Simonetta
Cavazzini, Marco
Fungo, Fernando Gabriel
Hossain, Mohammad I.
Belaidi, Abdelhak
Tabet, Nouar
Pozzi, Gianluca
Cerullo, Giulio
Nazeeruddin, Mohammad Khaja
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv INTERFACE PHYSICS
IR SPECTROSCOPY
PEROVSKITE SOLAR CELLS
PHOTOPHYSICS
ULTRAFAST SPECTROSCOPY
topic INTERFACE PHYSICS
IR SPECTROSCOPY
PEROVSKITE SOLAR CELLS
PHOTOPHYSICS
ULTRAFAST SPECTROSCOPY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv With a power conversion efficiency (PCE) exceeding 22 %, perovskite solar cells (PSCs) have thrilled photovoltaic research. However, the interface behavior is still not understood and is a hot topic of research: different processes occur over a hierarchy of timescales, from femtoseconds to seconds, which makes perovskite interface physics intriguing. Herein, through femtosecond transient absorption spectroscopy with spectral coverage extending into the crucial IR region, the ultrafast interface-specific processes at standard and newly molecularly engineered perovskite interfaces in state-of-the-art PSCs are interrogated. Ultrafast interfacial charge injection occurs with a time constant of 100 fs, resulting in hot transfer from energetic charges and setting the timescale for the first step involved in the complex charge-transfer process. This is also true for 20 % efficient devices measured under real operation, for which the femtosecond injection is followed by a slower picosecond component. These findings provide compelling evidence for the femtosecond interfacial charge-injection step and demonstrate a robust method for the straightforward identification of interfacial non-equilibrium processes on the ultrafast timescale.
Fil: Grancini, Giulia. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Viola, Daniele. Politecnico di Milano; Italia
Fil: Lee, Yonghui. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Saliba, Michael. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Paek, Sanghyun. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Cho, Kyung Taek. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Orlandi, Simonetta. Consiglio Nazionale delle Ricerche; Italia
Fil: Cavazzini, Marco. Consiglio Nazionale delle Ricerche; Italia
Fil: Fungo, Fernando Gabriel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Hossain, Mohammad I.. Qatar Environment And Energy Research Institute; Qatar
Fil: Belaidi, Abdelhak. Qatar Environment And Energy Research Institute; Qatar
Fil: Tabet, Nouar. Qatar Environment And Energy Research Institute; Qatar
Fil: Pozzi, Gianluca. Consiglio Nazionale delle Ricerche; Italia
Fil: Cerullo, Giulio. Politecnico di Milano; Italia
Fil: Nazeeruddin, Mohammad Khaja. Ecole Polytechnique Federale de Lausanne; Suiza
description With a power conversion efficiency (PCE) exceeding 22 %, perovskite solar cells (PSCs) have thrilled photovoltaic research. However, the interface behavior is still not understood and is a hot topic of research: different processes occur over a hierarchy of timescales, from femtoseconds to seconds, which makes perovskite interface physics intriguing. Herein, through femtosecond transient absorption spectroscopy with spectral coverage extending into the crucial IR region, the ultrafast interface-specific processes at standard and newly molecularly engineered perovskite interfaces in state-of-the-art PSCs are interrogated. Ultrafast interfacial charge injection occurs with a time constant of 100 fs, resulting in hot transfer from energetic charges and setting the timescale for the first step involved in the complex charge-transfer process. This is also true for 20 % efficient devices measured under real operation, for which the femtosecond injection is followed by a slower picosecond component. These findings provide compelling evidence for the femtosecond interfacial charge-injection step and demonstrate a robust method for the straightforward identification of interfacial non-equilibrium processes on the ultrafast timescale.
publishDate 2017
dc.date.none.fl_str_mv 2017-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/72521
Grancini, Giulia; Viola, Daniele; Lee, Yonghui; Saliba, Michael; Paek, Sanghyun; et al.; Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces; Wiley VCH Verlag; Chemphyschem; 18; 17; 9-2017; 2381-2389
1439-4235
1439-7641
CONICET Digital
CONICET
url http://hdl.handle.net/11336/72521
identifier_str_mv Grancini, Giulia; Viola, Daniele; Lee, Yonghui; Saliba, Michael; Paek, Sanghyun; et al.; Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces; Wiley VCH Verlag; Chemphyschem; 18; 17; 9-2017; 2381-2389
1439-4235
1439-7641
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/cphc.201700492
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1002/cphc.201700492
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley VCH Verlag
publisher.none.fl_str_mv Wiley VCH Verlag
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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