Semitransparent Organic Photovoltaics Utilizing Intrinsic Charge Generation in Non-Fullerene Acceptors

Semitransparent Organic Photovoltaics Utilizing Intrinsic Charge Generation in Non-Fullerene Acceptors

© 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 9 vom: 05. März, Seite e2305367
1. Verfasser: Sharma, Anirudh (VerfasserIn)
Weitere Verfasser: Gasparini, Nicola, Markina, Anastasia, Karuthedath, Safakath, Gorenflot, Julien, Xu, Han, Han, Jianhua, Balawi, Ahmed, Liu, Wenlan, Bryant, Daniel, Bertrandie, Jules, Troughton, Joel, Paleti, Sri Harish Kumar, Bristow, Helen, Laquai, Frederic, Andrienko, Denis, Baran, Derya
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article diluted OPVs donor dilute solar cells non-fullerene acceptors organic solar cells semitransparent solar cells
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520 |a In organic semiconductors, a donor/acceptor heterojunction is typically required for efficient dissociation of excitons. Using transient absorption spectroscopy to study the dynamics of excited states in non-fullerene acceptors (NFAs), it is shown that NFAs can generate charges without a donor/acceptor interface. This is due to the fact that dielectric solvation provides a driving force sufficient to dissociate the excited state and form the charge-transfer (CT) state. The CT state is further dissociated into free charges at interfaces between polycrystalline regions in neat NFAs. For IEICO-4F, incorporating just 9 wt% donor polymer PTB7-Th in neat films greatly boosts charge generation, enhancing efficient exciton separation into free charges. This property is utilized to fabricate donor-dilute organic photovoltaics (OPV) delivering a power conversion efficiency of 8.3% in the case of opaque devices with a metal top-electrode and an active layer average visible transmittance (AVT) of 75%. It is shown that the intrinsic charge generation in low-bandgap NFAs contributes to the overall photocurrent generation. IEICO-4F-based OPVs with limited PTB7-Th content have high thermal resilience demonstrating little drop in performance over 700 h. PTB7-Th:IEICO-4F semitransparent OPVs are leveraged to fabricate an 8-series connected semitransparent module, demonstrating light-utilization efficiency of 2.2% alongside an AVT of 63% 
650 4 |a Journal Article 
650 4 |a diluted OPVs 
650 4 |a donor dilute solar cells 
650 4 |a non-fullerene acceptors 
650 4 |a organic solar cells 
650 4 |a semitransparent solar cells 
700 1 |a Gasparini, Nicola  |e verfasserin  |4 aut 
700 1 |a Markina, Anastasia  |e verfasserin  |4 aut 
700 1 |a Karuthedath, Safakath  |e verfasserin  |4 aut 
700 1 |a Gorenflot, Julien  |e verfasserin  |4 aut 
700 1 |a Xu, Han  |e verfasserin  |4 aut 
700 1 |a Han, Jianhua  |e verfasserin  |4 aut 
700 1 |a Balawi, Ahmed  |e verfasserin  |4 aut 
700 1 |a Liu, Wenlan  |e verfasserin  |4 aut 
700 1 |a Bryant, Daniel  |e verfasserin  |4 aut 
700 1 |a Bertrandie, Jules  |e verfasserin  |4 aut 
700 1 |a Troughton, Joel  |e verfasserin  |4 aut 
700 1 |a Paleti, Sri Harish Kumar  |e verfasserin  |4 aut 
700 1 |a Bristow, Helen  |e verfasserin  |4 aut 
700 1 |a Laquai, Frederic  |e verfasserin  |4 aut 
700 1 |a Andrienko, Denis  |e verfasserin  |4 aut 
700 1 |a Baran, Derya  |e verfasserin  |4 aut 
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773 1 8 |g volume:36  |g year:2024  |g number:9  |g day:05  |g month:03  |g pages:e2305367 
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