Title
Controlling crystallization to improve charge mobilities in transistors based on 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene
Date Issued
31 July 2015
Access level
metadata only access
Resource Type
journal article
Author(s)
Adhikari J.
Vakhshouri K.
Calitree B.
Hexemer A.
Hickner M.
Pennsylvania State University
Publisher(s)
Royal Society of Chemistry
Abstract
Long-range order at multiple length scales in small molecule semiconductors is critical to achieve effective electrical charge transport. As a consequence, processing strategies are often important for the fabrication of high-performance devices, such as thin-film transistors. We demonstrate that melting followed by quenching at a fixed temperature can obviate prior processing, control the crystallization process, and lead to enhanced charge mobilities in thin-film transistors based on 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene active layers. Melting followed by quenching to 80 °C yields films with higher degrees of orientational order, and therefore charge mobilities in devices that are higher by a factor of five over films annealed at the same temperature directly after film casting.
Start page
8799
End page
8803
Volume
3
Issue
34
Language
English
OCDE Knowledge area
Ingeniería eléctrica, Ingeniería electrónica Ingeniería de materiales
Scopus EID
2-s2.0-84939838845
Source
Journal of Materials Chemistry C
ISSN of the container
20507534
Sources of information: Directorio de Producción Científica Scopus