Interface engineering for molecular alignment and device performance of quaterrylene thin films

R. Hayakawa , Matthieu Petit (1) , Y. Wakayama , T. Chikyow

1 CINaM - Centre Interdisciplinaire de Nanoscience de Marseille

We investigated the impact of interface modification by an octadecyltrichlorosilane self-assembled monolayer 共OTS-SAM兲 on growth mode and transistor performance of quaterrylene thin films. Interface modification by OTS-SAM contributed effectively to stress-free film growth and highly molecular ordering, particularly in the initial layers, dramatically improving transistor performance. We found that the structural features in a few layers were key factors for determining the overall thin film growth mode and ameliorating carrier transport in organic field-effect transistors 共OFETs兲. These results clearly demonstrated the effectiveness of interface engineering in the OFETs.

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Electronique

R. Hayakawa, Matthieu Petit, Y. Wakayama, T. Chikyow. Interface engineering for molecular alignment and device performance of quaterrylene thin films. Applied Physics Letters, 2008, 93, pp.153301. ⟨10.1063/1.2998404⟩. ⟨hal-00447725⟩