Feature of polaronic charge carriers in polysilanes: Experimental and theoretical approach

0343972 - ÚMCH 2011 RIV US eng J - Journal Article
Nešpůrek, Stanislav - Kochalska, Anna - Nožár, Juraj - Kadashchuk, A. - Fishchuk, I. I. - Sworakowski, J. - Kajzar, F.
Feature of polaronic charge carriers in polysilanes: Experimental and theoretical approach.
Molecular Crystals and Liquid Crystals. Roč. 521, - (2010), s. 72-83. ISSN 1542-1406. E-ISSN 1563-5287.
[International Conference on Frontiers of Polymers and Advanced Materials /10./. Santiago, 27.09.2009-02.10.2009]
R&D Projects: GA AV ČR IAA100100622; GA AV ČR KAN400720701
Institutional research plan: CEZ:AV0Z40500505
Keywords : binding energy * charge mobility * hopping transport
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 0.543, year: 2010

Formation and transport of polarons in poly[methyl(phenyl) silylene]is discussed. Analytical theory based on the effective medium approach is used to explain the electric field dependence of charge carrier mobility. The obtained value of the polaron binding energy is about 0.29 eV. This result is in agreement with quantum chemical calculations based on the B3LYP method. Charge carrier transport can be described by a small polaron movement in the presence of an energetic disorder. Polaron binding energy represents significant part of the activation energy of the charge mobility.
Permanent Link: http://hdl.handle.net/11104/0005931