Morphology control of TIPS-pentacene grains with inert gas injection and effects on the performance of OTFTs

作者：Kim Min Jung; Heo Hyo Weon; Suh Yong Kweon; Song Chung Kun^*

来源：Organic Electronics, 2011, 12(7): 1170-1176.

DOI：10.1016/j.orgel.2011.03.034

• OTFT
• OFET
• TIPS-pentacene
• Morphology control
• Inert gas injection

We applied Ar gas injection while drying droplets of TIPS-pentacene in a quartz tube and controlled the growth direction of the grain boundary and the morphology. The organic thin film transistors (OTFTs) showed a high mobility of 0.53 +/- 0.02 cm(2)/V s with a small deviation of 3.7% when the gas direction was parallel to the source-drain current, resulting in the direction of the grain boundary being parallel to the current. In contrast, OTFTs having grain boundaries perpendicular to the current flow displayed mobility of 0.06 +/- 0.02 cm(2)/V s.

• 出版日期2011-7