Magnetoconductance anisotropy of a polymer thin film at the onset of metallicity
Journal article, 2015

Thin films of poly(2,5-bis(3-dodecyl-2-yl)-thieno[3,2-b] thiophene) (C12-PBTTT) polymer under electrolyte gating and doping are investigated as model systems for organic thin films devices approaching the metallic side of a metal-insulator (M-I) transition. For the most doped samples, with an estimated density reaching 8 x 10(20) cm(-3) holes and a conductivity exceeding 1000 S cm(-1), a positive high-field magnetoconductance is found in a limited temperature range window and only when the field is perpendicular to the sample plane. This signature of weak localization, combined with indications of finite zero-temperature conductivity, allows us to identify delocalized metallic-like transport in these thin films, even though the conductivity decreases when cooling down the samples.


S. Zanettini

University of Strasbourg

J. F. Dayen

University of Strasbourg

C. Etrillard

University of Strasbourg

N. Leclerc

Centre national de la recherche scientifique (CNRS)

Venkata Kamalakar Mutta

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

B. Doudin

University of Strasbourg

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 106 6 Art. no. 063303- 063303

Subject Categories

Materials Engineering

Other Engineering and Technologies



More information

Latest update

9/7/2018 1