ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Stable Hall voltages in presence of dynamic quasi-continuum bands in poly (3,4-ethylene-dioxythiophene)

Stadler, Philipp and Leonat, Lucia N and Menon, Reghu and Coskun, Halime and van Frank, Sandrine and Rankl, Christian and Scharber, Markus C (2019) Stable Hall voltages in presence of dynamic quasi-continuum bands in poly (3,4-ethylene-dioxythiophene). In: ORGANIC ELECTRONICS, 65 . pp. 412-418.

[img] PDF
Org_Ele_65_412_2019.pdf - Published Version
Restricted to Registered users only

Download (1MB) | Request a copy
Official URL: https://doi.org/10.1016/j.orgel.2018.12.001


Topological and thermal disorder complicate the mobility characterization in poly(3,4-ethylenedioxythiophene) systems and presently leaves the exact transport mechanisms not fully understood. Here we show that ac-Hall measured by lock-in amplifier is able to resolve the Hall voltage in semimetallic polymers between room temperature and 32 K. These results are evaluated using an organic random phase model. This accounts for the role of tail states and, particularly, for thermal disorder of molecular semiconductors. We report band mobilities up to 3.7 cm(2) V-1 s(-1) in semimetallic polymers occurring in delocalized bands that originate from significant electron coherence across the polymer chains.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ELSEVIER SCIENCE BV
Keywords: Hall-effect; Conducting polymers; Weak localization; Organic phase model; Electron coherence; PEDOT
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 25 Jan 2019 12:43
Last Modified: 25 Jan 2019 12:43
URI: http://eprints.iisc.ac.in/id/eprint/61429

Actions (login required)

View Item View Item