Analysis of melt flow process in melt transfer printing of organic semiconductors

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04576
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 21050:Electric and electronic materials-related
• Research Institution: Shinshu University
• Principal Investigator: Ichikawa Musubu 信州大学, 学術研究院繊維学系, 教授 (80324242)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 有機半導体 / 成膜法 / 無溶剤 / 非真空

Outline of Final Research Achievements

The meniscus force has been successfully quantified by analyzing the surface topography of organic semiconductor thin films deposited by the melt transfer method. It was found that the meniscus force can be determined by analyzing the surface "dent" of the transferred thin film using an equation that expresses the maximum deflection of a fixed beam at both ends under an equally distributed load, which is well known in the mechanics of materials. For quantification, it was clarified that flow conditions must be taken into account to maintain the meniscus and that the step-terrace structure must be utilized in the "dent" analysis.

Free Research Field

有機半導体科学

Academic Significance and Societal Importance of the Research Achievements

有機半導体は柔軟な基板上に作られるため、従来のシリコン半導体では作製困難なデバイスの実現が期待される。また、デバイスの低コスト化も期待されている。溶融転写法は、真空を用いず製膜できることからデバイスの低コスト化に寄与し、また、有機溶媒を用いないことから環境や人体への負荷を低減することができる。本研究は、有機エレクトロニクスの発展に寄与するものである。