Controlled enhancement of the electron field-effect mobility of F16CuPc thin-film transistors by use of functionalized SiO2 substrates
- 26 October 2005
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 87 (18) , 183504
- https://doi.org/10.1063/1.2117622
Abstract
We present a comparative study of copper-hexadecafluorophthalocyanine ( F 16 Cu Pc ) filmsgrown on bare Si O 2 and on Si O 2 functionalized by octadecyltrimethoxisilane (OTMS), a methyl terminated molecular layer with a lower surface energy than Si O 2 . We show that the functionalization of Si O 2 by OTMS leads to the formation of highly structurally ordered F 16 Cu Pc crystallites. The extended lateral order and subsequent reduction of grain boundaries result in an improved field-effect mobility for electrons by almost an order of magnitude in thin-film transistors made of these films.Keywords
This publication has 21 references indexed in Scilit:
- Surface-treatment effects on organic thin-film transistorsSynthetic Metals, 2005
- Dislocation arrangements in pentacene thin filmsPhysical Review B, 2004
- Organic thin film transistors: From theory to real devicesJournal of Materials Research, 2004
- Self-organization of phthalocyanines on Al2O3 (1120) in aligned and ordered filmsJournal of Materials Research, 2004
- Control of carrier density by self-assembled monolayers in organic field-effect transistorsNature Materials, 2004
- Structure, morphology, and optical properties of thin films of F16CuPc grown on silicon dioxideOrganic Electronics, 2004
- Pentacene thin film transistors on inorganic dielectrics: Morphology, structural properties, and electronic transportJournal of Applied Physics, 2003
- Controlled Molecular Alignment in Phthalocyanine Thin Films on Stepped Sapphire SurfacesAdvanced Functional Materials, 2002
- Grain size dependent mobility in polycrystalline organic field-effect transistorsSynthetic Metals, 2001
- New Air-Stable n-Channel Organic Thin Film TransistorsJournal of the American Chemical Society, 1998