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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201804032
|2 doi
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|a pubmed24n0961.xml
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|a (DE-627)NLM288534689
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|a (NLM)30216567
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a He, Tao
|e verfasserin
|4 aut
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|a Impact of 2-Ethylhexyl Stereoisomers on the Electrical Performance of Single-Crystal Field-Effect Transistors
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|c 2018
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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 05.11.2018
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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 © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Many organic semiconductors (OSCs) inherit chiral alkyl chains, which ensure the desirable high solubility for solution-processing but may also lead to disorder, inhomogeneous film-formation, as well as interfacial defects due to the presence of mixtures of stereoisomers or diastereomers, which impair their peak performance. Here, single-crystal field-effect transistors (SCFETs) of a diketopyrrolopyrrole-based organic semiconductor with chiral 2-ethylhexyl substituents by sublimation in air and organic ribbon mask method are fabricated. Devices of the mesomer (R/S), both enantiomers (R/R, S/S), as well as mixtures of these three stereoisomers measured under ambient conditions exhibit all appreciable p-channel charge carrier mobilities of > 0.1 cm2 V-1 s-1 despite different packing arrangement in the R/S, R/R (or S/S), and racemate crystal structures. These results suggest a surprising tolerance for isomeric impurities. The highest literature-reported p-channel mobility so far for a diketopyrrolopyrrole-based OSC of 3.4 cm2 V-1 s-1 (Ion /Ioff of 1 × 106 ) is, however, only obtained for the pure R/S mesomer, illustrating the inherent potential of stereochemical purity. These results on SCFETs are further substantiated by studies on organic thin-film transistors (OTFTs) of pure and mixed thin films of the different stereoisomers
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|a Journal Article
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|a chirality
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|a diketopyrrolopyrroles
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|a organic electronics
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|a single-crystal field-effect transistors
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1 |
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|a Leowanawat, Pawaret
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Burschka, Christian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Stepanenko, Vladimir
|e verfasserin
|4 aut
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1 |
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|a Stolte, Matthias
|e verfasserin
|4 aut
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| 700 |
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|a Würthner, Frank
|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 30(2018), 44 vom: 15. Nov., Seite e1804032
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:30
|g year:2018
|g number:44
|g day:15
|g month:11
|g pages:e1804032
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|u http://dx.doi.org/10.1002/adma.201804032
|3 Volltext
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