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240329s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202312101
|2 doi
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|a pubmed24n1453.xml
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|a (DE-627)NLM370339673
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|a (NLM)38544433
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|a DE-627
|b ger
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|a eng
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|a Xu, Renjie
|e verfasserin
|4 aut
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|a High Open-Circuit Voltage Organic Solar Cells with 19.2% Efficiency Enabled by Synergistic Side-Chain Engineering
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 26.06.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Restricted by the energy-gap law, state-of-the-art organic solar cells (OSCs) exhibit relatively low open-circuit voltage (VOC) because of large nonradiative energy losses (ΔEnonrad). Moreover, the trade-off between VOC and external quantum efficiency (EQE) of OSCs is more distinctive; the power conversion efficiencies (PCEs) of OSCs are still <15% with VOCs of >1.0 V. Herein, the electronic properties and aggregation behaviors of non-fullerene acceptors (NFAs) are carefully considered and then a new NFA (Z19) is delicately designed by simultaneously introducing alkoxy and phenyl-substituted alkyl chains to the conjugated backbone. Z19 exhibits a hypochromatic-shifted absorption spectrum, high-lying lowest unoccupied molecular orbital energy level and ordered 2D packing mode. The D18:Z19-based blend film exhibits favorable phase separation with face-on dominated molecular orientation, facilitating charge transport properties. Consequently, D18:Z19 binary devices afford an exciting PCE of 19.2% with a high VOC of 1.002 V, surpassing Y6-2O-based devices. The former is the highest PCE reported to date for OSCs with VOCs of >1.0 V. Moreover, the ΔEnonrad of Z19- (0.200 eV) and Y6-2O-based (0.155 eV) devices are lower than that of Y6-based (0.239 eV) devices. Indications are that the design of such NFA, considering the energy-gap law, could promote a new breakthrough in OSCs
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|a Journal Article
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|a molecular aggregation
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|a non‐fullerene acceptors
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|a open‐circuit voltage
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|a organic solar cells
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|a power conversion efficiencies
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| 650 |
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|a side‐chain engineering
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| 700 |
1 |
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|a Jiang, Yuanyuan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Feng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ran, Guangliu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Kerui
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Wenkai
|e verfasserin
|4 aut
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| 700 |
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|a Zhu, Xiaozhang
|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 36(2024), 26 vom: 21. Juni, Seite e2312101
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:26
|g day:21
|g month:06
|g pages:e2312101
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|u http://dx.doi.org/10.1002/adma.202312101
|3 Volltext
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