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240731s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202407406
|2 doi
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|a pubmed24n1487.xml
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|b ger
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Guan, Zhiqiang
|e verfasserin
|4 aut
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| 245 |
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|a Ultrafast Electron-Transfer Via Hybrid States at Perovskite/Fullerene Interface
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 31.07.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.
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|a Interfacial charge-transfer between perovskite and charge-transport layers plays a key role in determining performance of perovskite solar cells. The conventional viewpoint emphases the necessity of favorable energy-level alignment of the two components. In recent reports, efficient electron-transfer is observed from perovskite to fullerene-based electron-transport layers even when there are unfavorable energy-level alignments, but the mechanism is still unclear. Here, using an ultrafast in situ two-photon photoelectron spectroscopy, real-time observations of electron-transfer processes at CsPbI3/C60 interface in both temporal and energetic dimensions are reported. Due to strong electronic coupling, a large amount of interfacial hybrid states is generated at the interfaces, aiding fast photoinduced electron-transfer in ≈124 fs. This process is further verified by nonadiabatic molecular dynamics simulations and transient absorption experiments. The short timescale explains why electron-transfer can overcome unfavorable energy-level alignments, providing a guideline for device design
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|a Journal Article
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|a electron‐transfer
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|a hybridization
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|a perovskite/fullerene interface
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|a two‐photon photoelectron spectroscopy
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1 |
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|a Li, Yang
|e verfasserin
|4 aut
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| 700 |
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|a Man, Ping
|e verfasserin
|4 aut
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|a Tan, Hongji
|e verfasserin
|4 aut
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|a Wei, Qi
|e verfasserin
|4 aut
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|a Liu, Jinjie
|e verfasserin
|4 aut
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|a Li, Mingjie
|e verfasserin
|4 aut
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|a Ly, Thuc Hue
|e verfasserin
|4 aut
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|a Yin, Jun
|e verfasserin
|4 aut
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| 700 |
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|a Lee, Chun-Sing
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g (2024) vom: 31. Juli, Seite e2407406
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g year:2024
|g day:31
|g month:07
|g pages:e2407406
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|u http://dx.doi.org/10.1002/adma.202407406
|3 Volltext
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