Development of quality organic transistors fabricated by solution process at room temperature using supercooled liquid crystal phase

2014 Fiscal Year Final Research Report

• Project/Area Number: 24750178
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Functional materials/Devices
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: IINO Hiroaki 東京工業大学, 像情報工学研究所, 准教授 (50432000)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 過冷却液晶相 / アニール / 高移動度 / 有機トランジスタ / 多結晶薄膜 / 溶液プロセス / 耐熱性

Outline of Final Research Achievements

I have investigated the organic transistor materials having supercooled liquid crystal phase in order to realize both high solution processability and high thermal durability of polycrystalline thin films. The developed materials having a supercooled liquid crystal phase show high solution processability at room temperature and high FET mobility over 10cm2/Vs after thermal annealing at 120 oC for 5minutes, despite of polycrystalline thin films. Furthermore, the high mobility is hardly changed after thermal stress up to 140 oC because the materials have an asymmetric phase transition behavior in cooling and heating process. I succeeded the development of quality organic transistors materials having high solution processability, high thermal durability, and high mobility.

Free Research Field

有機トランジスタ材料