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dc.contributor.author
Grancini, Giulia
dc.contributor.author
Viola, Daniele
dc.contributor.author
Lee, Yonghui
dc.contributor.author
Saliba, Michael
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Paek, Sanghyun
dc.contributor.author
Cho, Kyung Taek
dc.contributor.author
Orlandi, Simonetta
dc.contributor.author
Cavazzini, Marco
dc.contributor.author
Fungo, Fernando Gabriel
dc.contributor.author
Hossain, Mohammad I.
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Belaidi, Abdelhak
dc.contributor.author
Tabet, Nouar
dc.contributor.author
Pozzi, Gianluca
dc.contributor.author
Cerullo, Giulio
dc.contributor.author
Nazeeruddin, Mohammad Khaja
dc.date.available
2019-03-26T14:56:23Z
dc.date.issued
2017-09
dc.identifier.citation
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
dc.identifier.issn
1439-4235
dc.identifier.uri
http://hdl.handle.net/11336/72521
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley VCH Verlag
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Interface Physics
dc.subject
Ir Spectroscopy
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Perovskite Solar Cells
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Photophysics
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Ultrafast Spectroscopy
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Otras Ciencias Químicas
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Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Femtosecond Charge-Injection Dynamics at Hybrid Perovskite Interfaces
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-18T19:29:09Z
dc.identifier.eissn
1439-7641
dc.journal.volume
18
dc.journal.number
17
dc.journal.pagination
2381-2389
dc.journal.pais
Alemania
dc.journal.ciudad
Weinheim
dc.description.fil
Fil: Grancini, Giulia. Ecole Polytechnique Federale de Lausanne; Suiza
dc.description.fil
Fil: Viola, Daniele. Politecnico di Milano; Italia
dc.description.fil
Fil: Lee, Yonghui. Ecole Polytechnique Federale de Lausanne; Suiza
dc.description.fil
Fil: Saliba, Michael. Ecole Polytechnique Federale de Lausanne; Suiza
dc.description.fil
Fil: Paek, Sanghyun. Ecole Polytechnique Federale de Lausanne; Suiza
dc.description.fil
Fil: Cho, Kyung Taek. Ecole Polytechnique Federale de Lausanne; Suiza
dc.description.fil
Fil: Orlandi, Simonetta. Consiglio Nazionale delle Ricerche; Italia
dc.description.fil
Fil: Cavazzini, Marco. Consiglio Nazionale delle Ricerche; Italia
dc.description.fil
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
dc.description.fil
Fil: Hossain, Mohammad I.. Qatar Environment And Energy Research Institute; Qatar
dc.description.fil
Fil: Belaidi, Abdelhak. Qatar Environment And Energy Research Institute; Qatar
dc.description.fil
Fil: Tabet, Nouar. Qatar Environment And Energy Research Institute; Qatar
dc.description.fil
Fil: Pozzi, Gianluca. Consiglio Nazionale delle Ricerche; Italia
dc.description.fil
Fil: Cerullo, Giulio. Politecnico di Milano; Italia
dc.description.fil
Fil: Nazeeruddin, Mohammad Khaja. Ecole Polytechnique Federale de Lausanne; Suiza
dc.journal.title
Chemphyschem
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/cphc.201700492
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1002/cphc.201700492
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