| Project/Area Number |
18K05064
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 32020:Functional solid state chemistry-related
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| Research Institution | University of Hyogo |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 蓄積電荷測定法 / 電荷注入障壁 / ACM / 有機デバイス / 有機FET / フタロシアニン / ペンタセン / 有機半導体 / 変位電流法 / 有機／金属界面 |
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| Outline of Final Research Achievements |
Accumulated charge measurement (ACM) is an experimental technique for studying the charge injection and extraction process in the MIOM junction comprising metal electrode 1(M1), insulator(Ins), organic semiconductor(OS), metal electrode 2(M2). This technique was reported by the author for the first time in 2016. The aim of this project is to develop this technique based on experimental and theoretical studies.
In this project, the author clarified that there are two types of charge extraction processes in the MIOM junctions. In the thermal equilibrium (TE) process, charge evacuation simultaneously occurs at the Ins/OS and OS/M2 boundaries. On the other hand, in the non-thermal equilibrium (NTE) process, charge evacuation at the OS/M2 boundary occurs in the first step, followed by charge evacuation at the Ins/OS boundary in the second step. To evaluate the injection barrier at the OS/M2 interface based on ACM, NTE process is more convenient than TE process.
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| Academic Significance and Societal Importance of the Research Achievements |
有機薄膜デバイス作成においては、金属／有機半導体あるいは絶縁体／有機半導体等、種々の界面の物性を理解する必要がある。しかしながら、このような実験を系統的に行う実験手法は、光電子分光測定等、分光学的手法に限定されており、実デバイスを用いた実験手法は報告されていなかった。本研究は実デバイスを用いた新しい実験手法の開発に関連するものであり、今後の有機薄膜デバイス作成に大きな影響を与えることが期待される。
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