Journal of Information Display

The Korean Infomation Display Society (한국정보디스플레이학회)
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Morphology control of inkjet-printed small-molecule organic thin-film transistors with bank structures

  • Kim, Yong-Hoon (Flexible Display Research Center, Korea Electronics Technology Institute) ;
  • Park, Sung-Kyu (School of Electrical and Electronics Engineering, College of Engineering, Chung-Ang University)
  • Received : 2011.04.26
  • Accepted : 2011.08.25
  • Published : 2011.12.31
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Abstract

Reported herein is the film morphology control of inkjet-printed 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) organic thin-film transistors for the improvement of their performance and of the device-to-device uniformity. The morphology of the inkjetted TIPS-pentacene films was significantly influenced by the bank geometry such as the bank shapes and confinement area for the channel region. A specific confinement size led to the formation of uniform TIPS-pentacene channel layers and better electrical properties, which suggests that the ink volume and the solid concentration of the organic-semiconductor solutions should be considered in designing the bank geometry.

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