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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201701156
|2 doi
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|a pubmed24n0911.xml
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|a (DE-627)NLM273346210
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|a (NLM)28657152
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Cha, Hyojung
|e verfasserin
|4 aut
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| 245 |
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|a An Efficient, "Burn in" Free Organic Solar Cell Employing a Nonfullerene Electron Acceptor
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|c 2017
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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 Completed 18.07.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a A comparison of the efficiency, stability, and photophysics of organic solar cells employing poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3'″-di(2-octyldodecyl)-2,2';5',2″;5″,2'″-quaterthiophen-5,5'″-diyl)] (PffBT4T-2OD) as a donor polymer blended with either the nonfullerene acceptor EH-IDTBR or the fullerene derivative, [6,6]-phenyl C71 butyric acid methyl ester (PC71 BM) as electron acceptors is reported. Inverted PffBT4T-2OD:EH-IDTBR blend solar cell fabricated without any processing additive achieves power conversion efficiencies (PCEs) of 9.5 ± 0.2%. The devices exhibit a high open circuit voltage of 1.08 ± 0.01 V, attributed to the high lowest unoccupied molecular orbital (LUMO) level of EH-IDTBR. Photoluminescence quenching and transient absorption data are employed to elucidate the ultrafast kinetics and efficiencies of charge separation in both blends, with PffBT4T-2OD exciton diffusion kinetics within polymer domains, and geminate recombination losses following exciton separation being identified as key factors determining the efficiency of photocurrent generation. Remarkably, while encapsulated PffBT4T-2OD:PC71 BM solar cells show significant efficiency loss under simulated solar irradiation ("burn in" degradation) due to the trap-assisted recombination through increased photoinduced trap states, PffBT4T-2OD:EH-IDTBR solar cell shows negligible burn in efficiency loss. Furthermore, PffBT4T-2OD:EH-IDTBR solar cells are found to be substantially more stable under 85 °C thermal stress than PffBT4T-2OD:PC71 BM devices
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|a Journal Article
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|a charge separation
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|a nonfullerene acceptors
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|a organic solar cells
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|a trap assisted recombination
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|a Wu, Jiaying
|e verfasserin
|4 aut
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|a Wadsworth, Andrew
|e verfasserin
|4 aut
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|a Nagitta, Jade
|e verfasserin
|4 aut
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|a Limbu, Saurav
|e verfasserin
|4 aut
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|a Pont, Sebastian
|e verfasserin
|4 aut
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|a Li, Zhe
|e verfasserin
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|a Searle, Justin
|e verfasserin
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|a Wyatt, Mark F
|e verfasserin
|4 aut
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|a Baran, Derya
|e verfasserin
|4 aut
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|a Kim, Ji-Seon
|e verfasserin
|4 aut
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|a McCulloch, Iain
|e verfasserin
|4 aut
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|a Durrant, James R
|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 29(2017), 33 vom: 16. Sept.
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:29
|g year:2017
|g number:33
|g day:16
|g month:09
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|u http://dx.doi.org/10.1002/adma.201701156
|3 Volltext
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