A study of carrier transport mechanism in organic-inorganic hybrid field effect transistor

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K15157
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 29010:Applied physical properties-related
• Research Institution: Tohoku University
• Principal Investigator: Suzuki Kazuya 東北大学, 材料科学高等研究所, 助教 (20734297)
• Project Period (FY): 2020-04-01 – 2022-03-31
• Keywords: 有機無機ハイブリット / 電界効果型トランジスタ / 磁気抵抗効果

Outline of Final Research Achievements

In this study, I developed new electric field effect transistor to investigate the spin-dependent carrier transport mechanism of organic molecules adsorbed on ferromagnetic metal, which plays an important role in the spin injection mechanism from ferromagnetic metal into organic molecules. This work clarified that a magnetoresistive effect was appeared in an organic-inorganic hybrid channel layer that combines an appropriate ferromagnetic nano-dots structure and an organic molecular layer. This result indicates that the promising device structure for investigating the spin-dependent carrier transport mechanism in the organic-inorganic interface was established.

Free Research Field

スピントロニクス

Academic Significance and Societal Importance of the Research Achievements

本研究により, 電荷注入機構, スピン注入・検出機構, キャリア輸送特性など多くの物理機構が複雑に織り込まれた従来のスピンバルブ型素子では調べることが困難であった強磁性体に吸着した有機分子間のキャリア輸送特性を調べる基盤的な素子が確立された. これにより, 有機無機界面の学術的理解が進み, 将来的に有機-無機ハイブリット界面を用いた新デバイスの実現に貢献していくと期待される.