Universität zu Köln

Luzio, Alessandro, Nuebling, Fritz, Martin, Jaime, Fazzi, Daniele ORCID: 0000-0002-8515-4214, Selter, Philipp, Gann, Eliot, McNeill, Christopher R. ORCID: 0000-0001-5221-878X, Brinkmann, Martin, Hansen, Michael Ryan ORCID: 0000-0001-7114-8051, Stingelin, Natalie ORCID: 0000-0002-1414-4545, Sommer, Michael and Caironi, Mario (2019). Microstructural control suppresses thermal activation of electron transport at room temperature in polymer transistors. Nat. Commun., 10. LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

Full text not available from this repository.

Abstract

Recent demonstrations of inverted thermal activation of charge mobility in polymer field-effect transistors have excited the interest in transport regimes not limited by thermal barriers. However, rationalization of the limiting factors to access such regimes is still lacking. An improved understanding in this area is critical for development of new materials, establishing processing guidelines, and broadening of the range of applications. Here we show that precise processing of a diketopyrrolopyrrole-tetrafluorobenzene-based electron transporting copolymer results in single crystal-like and voltage-independent mobility with vanishing activation energy above 280 K. Key factors are uniaxial chain alignment and thermal annealing at temperatures within the melting endotherm of films. Experimental and computational evidences converge toward a picture of electrons being delocalized within crystalline domains of increased size. Residual energy barriers introduced by disordered regions are bypassed in the direction of molecular alignment by a more efficient interconnection of the ordered domains following the annealing process.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Luzio, Alessandro UNSPECIFIED UNSPECIFIED UNSPECIFIED Nuebling, Fritz UNSPECIFIED UNSPECIFIED UNSPECIFIED Martin, Jaime UNSPECIFIED UNSPECIFIED UNSPECIFIED Fazzi, Daniele UNSPECIFIED orcid.org/0000-0002-8515-4214 UNSPECIFIED Selter, Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED Gann, Eliot UNSPECIFIED UNSPECIFIED UNSPECIFIED McNeill, Christopher R. UNSPECIFIED orcid.org/0000-0001-5221-878X UNSPECIFIED Brinkmann, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Hansen, Michael Ryan UNSPECIFIED orcid.org/0000-0001-7114-8051 UNSPECIFIED Stingelin, Natalie UNSPECIFIED orcid.org/0000-0002-1414-4545 UNSPECIFIED Sommer, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Caironi, Mario UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-134578
DOI:	10.1038/s41467-019-11125-9
Journal or Publication Title:	Nat. Commun.
Volume:	10
Date:	2019
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2041-1723
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Physical Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FIELD-EFFECT TRANSISTORS; HIGH-MOBILITY; BAND-LIKE; CHARGE-TRANSPORT; ORGANIC TRANSISTORS; MOLECULAR-STRUCTURE; PERFORMANCE; RANGE; DESIGN; DISORDER Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13457