4.6 Article

Impact of structural anisotropy on electro-mechanical response in crystalline organic semiconductors

Journal

JOURNAL OF MATERIALS CHEMISTRY C
Volume 7, Issue 15, Pages 4382-4391

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc06385k

Keywords

-

Funding

  1. FNRS-FRFC [2.4.617.07.F, 2.5020.11]
  2. European Union's Horizon 2020 research and innovation program [646176]
  3. [ANR-10-LABX-0042-AMADEus]
  4. [ANR-10-IDEX-0003-02]

Ask authors/readers for more resources

In an effort to gain a fundamental understanding of the electromechanical response in high mobility crystalline organic semiconductors, we have investigated the uniaxial strain-mobility relationships in rubrene and benzothienobenzothiophene crystals. Elastic moduli and Poisson ratios of the materials are evaluated and the strain mobility response of these materials is rationalized using the effective masses and electronic couplings in the framework of hopping and band transport models, giving consistent results. The microscopic origin of the response is investigated in relation to the strain induced variations in the inter- and intra-molecular degrees of freedom. We demonstrate that the strain applied along one of the crystallographic directions in these materials does not only induce mobility variations along the same direction, but also along the other crystallographic directions that are mechanically coupled with large Poisson ratios. A rational design of electronic devices could therefore benefit from the efficient exploitation of this anisotropic strain mobility response in relation to the inherent crystalline anisotropy.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available