Tetrathienoacene copolymers as high mobility, soluble organic semiconductors.
Increasing the rigidity of the thiophene monomer through the use of an alkyl-substituted core that consists of four fused thiophene rings is shown to be a promising route toward high-performance organic semiconductors. We report on a dialkylated tetrathienoacene copolymer that can be deposited from solution to yield ordered films with a short pi-pi distance of 3.76 A and with a field-effect hole mobility that exceeds 0.3 cm2/V.s. This polymer enables simple transistor fabrication at relatively low temperatures, which is particularly important for the realization of large-area, mechanically flexible electronics.
Fong
Hon Hang
HH
Materials Science and Engineering, Cornell University, Ithaca New York 14853, USA.
Pozdin
Vladimir A
VA
Amassian
Aram
A
Malliaras
George G
GG
Smilgies
Detlef-M
DM
He
Mingqian
M
Gasper
Susan
S
Zhang
Feixia
F
Sorensen
Michael
M