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On the methodology of the determination of charge concentration dependent mobility from organic field-effect transistor characteristics

SYSNO ASEP	0485523
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	On the methodology of the determination of charge concentration dependent mobility from organic field-effect transistor characteristics
Author(s)	Menšík, Miroslav (UMCH-V)_RID Toman, Petr (UMCH-V)_{RID, ORCID} Bielecka, U. (PL) Bartkowiak, W. (PL) Pfleger, Jiří (UMCH-V)_RID Paruzel, Bartosz (UMCH-V)_{RID, ORCID}
Source Title	Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076 Roč. 20, č. 4 (2018), s. 2308-2319
Number of pages	12 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	field effect transistor ; charge carrier mobility ; conjugated polymer
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	GA15-05095S GA ČR - Czech Science Foundation (CSF)
	LTC17029 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UMCH-V - RVO:61389013
UT WOS	000423505500018
EID SCOPUS	85041200619
DOI	10.1039/C7CP06423C
Annotation	We developed a new methodology for determining charge concentration dependent mobility from organic field-effect transistor (OFET) characteristics, applicable for semiconducting polymers with structural and energy disorder. We show that basic formulae recommended by the “IEEE Standard for Test Methods for the Characterization of Organic Transistors and Materials” for the determination of the field-effect mobility as obtained from the slope ISD1/2vs. VSG (in the saturation regime) or from the transconductance dISD/dVSG (in the linear regime) are not suitable for materials with concentration dependent charge carrier mobility. We propose alternative expressions, which can be directly analytically derived from the drift–diffusion equation with the mobility explicitly dependent on the charge concentration. This methodology for mobility determination was used for analysis of the experimental data obtained for a poly(3-hexylthiophene)-based OFET with the bottom gate–bottom SD electrode configuration.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2019

Number of the records: 1