Characterization and improvement of current-injection organic semiconductor lasers
| Project/Area Number |
18H01852
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 29010:Applied physical properties-related
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2018: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Keywords | 有機半導体 / 有機エレクトロニクス / 電界効果トランジスタ / 有機半導体レーザー / DFB / レーザー / 電界効果トランジスタ― / 有機電界効果トランジスタ |
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| Outline of Final Research Achievements |
To elucidate the characteristics of current-injection organic semiconductor lasers, we studied the oscillation conditions in distributed feedback resonators used in current-injection organic semiconductor lasers. As a result, it was found that not only oscillation at the stopband edge due to coupling between the same mode, which was conventionally considered, but also oscillation at the mini-stopband edge due to coupling between different modes was observed.
In addition, we developed a new structure of light-emitting field-effect transistor using organic semiconductor single-crystals in which the charge transport function and the light-emission function are separated in different materials, and demonstrated the operation of the transistor.
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| Academic Significance and Societal Importance of the Research Achievements |
分布帰還型共振器を用いた有機半導体レーザーの発光波長は共振器の周期だけでなく，有機半導体の厚さにも依存することが知られていたが，その発光波長が計算されたストップバンドで良く説明できるものだけではなく，全く説明できない実験結果も存在した．本研究により，それがミニストップバンドを用いて説明できることが明らかになり，有機半導体レーザーの発光特性の解明に大きく貢献し，発振波長をよりよく制御できるようになった．
また，本研究で新しく開発した素子構造は，電荷輸送と発光効率がともに高い有機半導体の開発が難しいという問題点を，これらの機能を別々の物質に担わせることにより克服する新しいアプローチをもたらした．
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Report
(4 results)
Research Products
(13 results)
