Feature of Polaronic Charge Carriers in Polysilanes: Experimental and Theoretical Approach

Autor:	Stanislav Nešpůrek, Anna Kochalska, Juliusz Sworakowski, Andrey Kadashchuk, Ivan I. Fishchuk, Juraj Nožár, Francois Kajzar
Rok vydání:	2010
Předmět:	Condensed matter physics Chemistry Binding energy Silylene Charge (physics) General Chemistry Activation energy Condensed Matter Physics Polaron chemistry.chemical_compound Electric field Polysilane General Materials Science Charge carrier
Zdroj:	Molecular Crystals and Liquid Crystals. 521:72-83
ISSN:	1563-5287 1542-1406
DOI:	10.1080/15421401003724092
Popis:	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.
Databáze:	OpenAIRE
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