Control of Organic Semiconductor Molecular Orientation on Highly-Oriented Insulating Film and its Application to Organic TFTs

2015 Fiscal Year Final Research Report

• Project/Area Number: 25390076
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: IIMURA YASUFUMI 東京農工大学, 工学(系)研究科(研究院), 准教授 (10201302)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 有機ＴＦＴ / 分子配向制御 / 機能性ゲート絶縁膜 / 光配向処理

Outline of Final Research Achievements

For realizing high-performance organic TFTs, characteristic properties of organic materials that is unfeasible in the inorganic materials should be utilized. From this view point, this work is conducted to develop fabrication processes of high-performance organic TFTs by using a gate insulating film with molecular alignment capability. From the work, I mainly obtained the following two conclusions;
(1) When using a gate insulating film with vertical molecular alignment capability in organic TFTs, a good performance of an organic TFT is obtained by using a gate insulating film having a weak interaction with organic semiconductor molecules. (2) When using a gate insulating film with parallel molecular alignment capability in organic TFTs, a good performance of an organic TFT is obtained by using a gate insulating film having a strong interaction with organic semiconductor molecules and by selecting a proper alignment direction of the organic molecules.

Free Research Field

光エレクトロニクス