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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202001476
|2 doi
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|a pubmed24n1036.xml
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|a (DE-627)NLM310987903
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|a (NLM)32519429
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Feng, Kui
|e verfasserin
|4 aut
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|a High-Performance All-Polymer Solar Cells Enabled by n-Type Polymers with an Ultranarrow Bandgap Down to 1.28 eV
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|c 2020
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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 16.11.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Compared to organic solar cells based on narrow-bandgap nonfullerene small-molecule acceptors, the performance of all-polymer solar cells (all-PSCs) lags much behind due to the lack of high-performance n-type polymers, which should have low-aligned frontier molecular orbital levels and narrow bandgap with broad and intense absorption extended to the near-infrared region. Herein, two novel polymer acceptors, DCNBT-TPC and DCNBT-TPIC, are synthesized with ultranarrow bandgaps (ultra-NBG) of 1.38 and 1.28 eV, respectively. When applied in transistors, both polymers show efficient charge transport with a highest electron mobility of 1.72 cm2 V-1 s-1 obtained for DCNBT-TPC. Blended with a polymer donor, PBDTTT-E-T, the resultant all-PSCs based on DCNBT-TPC and DCNBT-TPIC achieve remarkable power conversion efficiencies (PCEs) of 9.26% and 10.22% with short-circuit currents up to 19.44 and 22.52 mA cm-2 , respectively. This is the first example that a PCE of over 10% can be achieved using ultra-NBG polymer acceptors with a photoresponse reaching 950 nm in all-PSCs. These results demonstrate that ultra-NBG polymer acceptors, in line with nonfullerene small-molecule acceptors, are also available as a highly promising class of electron acceptors for maximizing device performance in all-PSCs
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|a Journal Article
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|a all-polymer solar cells
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|a electron mobility
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|a n-type polymers
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|a power conversion efficiency
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|a ultranarrow bandgap
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|a Huang, Jiachen
|e verfasserin
|4 aut
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|a Zhang, Xianhe
|e verfasserin
|4 aut
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|a Wu, Ziang
|e verfasserin
|4 aut
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|a Shi, Shengbin
|e verfasserin
|4 aut
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|a Thomsen, Lars
|e verfasserin
|4 aut
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|a Tian, Yanqing
|e verfasserin
|4 aut
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|a Woo, Han Young
|e verfasserin
|4 aut
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|a McNeill, Christopher R
|e verfasserin
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|a Guo, Xugang
|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 32(2020), 30 vom: 14. Juli, Seite e2001476
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:32
|g year:2020
|g number:30
|g day:14
|g month:07
|g pages:e2001476
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|u http://dx.doi.org/10.1002/adma.202001476
|3 Volltext
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