Ultrahigh Mobility in an Organic Semiconductor by Vertical Chain Alignment

Vasyl Skrypnychuk; Gert-Jan A H Wetzelaer; Pavlo I Gordiichuk; Stefan C B Mannsfeld; Andreas Herrmann; Michael F Toney; David R Barbero

doi:10.1002/adma.201503422

Ultrahigh Mobility in an Organic Semiconductor by Vertical Chain Alignment

Adv Mater. 2016 Mar 23;28(12):2359-66. doi: 10.1002/adma.201503422. Epub 2016 Jan 27.

Authors

Vasyl Skrypnychuk¹, Gert-Jan A H Wetzelaer², Pavlo I Gordiichuk², Stefan C B Mannsfeld³, Andreas Herrmann², Michael F Toney³, David R Barbero¹

Affiliations

¹ Nano-Engineered Materials & Organic Electronics Laboratory, Umeå University, Umeå, 90187, Sweden.
² Polymer Chemistry and Bioengineering, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands.
³ Materials Science Division, Stanford Synchrotron Radiation Lightsource, Menlo Park, CA, 94025, USA.

PMID: 26813586
DOI: 10.1002/adma.201503422

Abstract

A method to produce highly efficient and long-range vertical charge transport is demonstrated in an undoped polythiophene thin film, with average mobilities above 3.1 cm(2) V(-1) s(-1) . These record high mobilities are achieved by controlled orientation of the polymer crystallites enabling the most efficient and fastest charge transport along the chain backbones and across multiple chains. The significant increase in mobility shown here may present a new route to producing faster and more efficient optoelectronic devices based on organic materials.

Keywords: charge transport; conjugated polymers; crystallinity; mobility; optoelectronic devices.