title: Observations of PDDTT subject to thermal treatment: correlation between performance and order.
abstract: We show that polybis(thienyl)thienodia-thiazolethiophene (PDDTT), a high-performance semiconducting polymer for photodetectors and field-effect transistors, has strong performance dependence on annealing temperature. An unprecedented increase of 3 orders of magnitude is observed in both transistor and photoconductive properties. XRD and AFM evidence points to increased ordering in PDDTT films with annealing. This correlation highlights the importance that order has in determining performance in PDDTT and has possible implications in the design of polymers.
authors.affiliation: Center for Polymers and Organic Solids, University of California, Santa Barbara, California 93106, USA. djy@engr.ucsb.edu
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Yuen
authors.forename: Rajeev
authors.initials: R
authors.lastname: Kumar
authors.forename: Jason
authors.initials: J
authors.lastname: Seifter
authors.forename: Sebastian
authors.initials: S
authors.lastname: Valouch
authors.forename: Dante
authors.initials: D
authors.lastname: Zakhidov
authors.forename: Daniel
authors.initials: D
authors.lastname: Moses
authors.forename: Uli
authors.initials: U
authors.lastname: Lemmer
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Heeger
authors.forename: Fred
authors.initials: F
authors.lastname: Wudl