Jump to main content
Jump to site search


Variations of the elastic modulus perpendicular to the surface of rubrene bilayer films

Author affiliations

Abstract

Investigations exploring the inherent mechanical properties of electronic materials have grown rapidly in recent years largely because they are important in developing flexible electronics, organic displays and sensors. However, our understanding of the mechanical properties of organic semiconductors with a thin-film form remains limited. We report herein on an investigation of the structures and related elastic moduli perpendicular to the surface of a rubrene thin film. A rubrene/Si(100) film typically has a cluster-type morphology mainly comprising crystalline nanodomains within the film. We propose a structural bilayer model that can be used to explain the layered nature or characteristics of the rubrene films. As the film thickness is increased, the enhancement in elastic modulus can be attributed to the presence of a soft surface layer on a hard underlayer. Based on four-point probe measurements, the bilayered nature of such materials can be used to characterize their electrical resistive behavior while interfacial roughness is sensitive to the transport paths of conduction electrons. This information is valuable for future applications of organic semiconductors in flexible devices.

Graphical abstract: Variations of the elastic modulus perpendicular to the surface of rubrene bilayer films

Back to tab navigation

Publication details

The article was received on 15 Nov 2018, accepted on 23 Jan 2019 and first published on 28 Jan 2019


Article type: Paper
DOI: 10.1039/C8CP07062H
Citation: Phys. Chem. Chem. Phys., 2019, Advance Article

  •   Request permissions

    Variations of the elastic modulus perpendicular to the surface of rubrene bilayer films

    Y. Jhou, C. Yang, S. Sie, H. Chiu and J. Tsay, Phys. Chem. Chem. Phys., 2019, Advance Article , DOI: 10.1039/C8CP07062H

Search articles by author

Spotlight

Advertisements