Synthesis and Effect of the Structure of Bithienyl-Terminated Surfactants for Dielectric Layer Modification in Organic Transistor

Autor: Lucia Feriancová, Iveta Kmentová, Michal Micjan, Milan Pavúk, Martin Weis, Martin Putala
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Materials, Vol 14, Iss 21, p 6345 (2021)
Druh dokumentu: article
ISSN: 14216345
1996-1944
DOI: 10.3390/ma14216345
Popis: A series of bithienyl-terminated surfactants with various alkyl chain lengths (from C8 to C13) and phosphono or chlorodimethylsilyl anchoring groups were synthesized by palladium-catalyzed hydrophosphonation, or platinum-catalyzed hydrosilylation as a key step. Surfactants were tested in pentacene or α-sexithiophene-based organic field-effect transistors (OFETs) for the modification of the dielectric surface. The studied surfactants increased the effective mobility of the α-sexithiophene-based device by up to one order of magnitude. The length of alkyl chain showed to be significant for the pentacene-based device, as the effective mobility only increased in the case of dielectric modification with bithienylundecylphosphonic acid. AFM allowed a better understanding of the morphology of semiconductors on bare SiO2 and surfaces treated with bithienylundecylphosphonic acid.
Databáze: Directory of Open Access Journals
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