Abstract
We report on the enhancement of the field-effect mobility of solution-processed 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-pentacene) by unidirectional topography (UT) of an inkjet-printed polymer insulator. The UT leads to anisotropic spreading and drying of the TIPS-pentacene droplet and enables to spontaneously develop the ordered structures during the solvent evaporation. The mobility of the UT-dictated TIPS-pentacene film (0.202 ± 0.012 cm2/Vs) is found to increase by more than a factor of two compared to that of the isotropic case (0.090 ± 0.032 cm2/Vs). The structural arrangement of the TIPS-pentacene molecules in relation to the mobility enhancement is described within an anisotropic wetting formalism. Our UT-based approach to the mobility enhancement is easily applicable to different classes of soluble organic field-effect transistors by adjusting the geometrical parameters such as the height, the width, and the periodicity of the UT of an inkjet-printed insulator.
| Original language | English |
|---|---|
| Article number | 193307 |
| Journal | Applied Physics Letters |
| Volume | 102 |
| Issue number | 19 |
| DOIs | |
| State | Published - May 13 2013 |
Bibliographical note
Funding Information:This work was supported in part by the National Research Foundation of Korea under the Ministry of Education, Science and Technology of Korea through the Grant No. 2011-0028422. One of the authors (J.E.A.) acknowledges the support from the US Office of Naval Research.
Funding
This work was supported in part by the National Research Foundation of Korea under the Ministry of Education, Science and Technology of Korea through the Grant No. 2011-0028422. One of the authors (J.E.A.) acknowledges the support from the US Office of Naval Research.
| Funders | Funder number |
|---|---|
| Office of Naval Research | |
| National Research Foundation of Korea | |
| Ministry of Education, Culture, Sports, Science and Technology | 2011-0028422 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)