Control of droplet morphology for inkjet-printed TIPS-pentacene transistors

Microelectronic Engineering
By: , and 

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Abstract

We report on methods to control the morphology of droplets of 6,13-bis(triisopropyl-silylethynyl) pentacene (TIPS-PEN), which are then used in the fabrication of organic thin film transistors (OTFTs). The grain size and distribution of the TIPS-PEN were found to depend on the temperature of the droplets during drying. The performance of the OTFTs could be improved by heating the substrate and also by changing the relative positions of the inkjet-printed droplets. In our experiments, the optimum substrate temperature was 46 °C in air. Transistors with the TIPS-PEN grain boundaries parallel to the current flow between the source and drain electrodes exhibited charge carrier mobilities of 0.44 ± 0.08 cm2/V s.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Control of droplet morphology for inkjet-printed TIPS-pentacene transistors
Series title Microelectronic Engineering
DOI 10.1016/j.mee.2012.01.006
Volume 95
Year Published 2012
Language English
Publisher Elsevier Science
Publisher location Amsterdam
Description 5 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Microelectronic Engineering
First page 1
Last page 4