2022 Fiscal Year Final Research Report
Understanding of molecular design of laser dyes for the applications of organic semiconductor lasers
| Project/Area Number |
20K21227
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 35:Polymers, organic materials, and related fields
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2020-07-30 – 2023-03-31
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| Keywords | 有機半導体レーザー / レーザー色素 |
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| Outline of Final Research Achievements |
Organic semiconductor laser diodes (OSLDs), which are a class of electrically pumped organic lasers, are promising for a wide range of applications as a successor to organic light-emitting diodes (OLEDs). Since the first OSLD has just achieved very recently, semiconducting laser materials still have various challenges and room for improvement. The low threshold light amplification is a key parameter for the laser devices. We demonstrated one of the best performances with the various molecular designs as well as the different types of the devices. In addition, we also achieved progresses in fundamental aspects of photochemistry, such as realizing high efficiency for room temperature phosphorescence and suppression of non-radiative decay. These results will contribute to future developments of organic lasers.
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| Free Research Field |
有機半導体デバイス
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の対象は有機レーザー色素の開発であるが，その中には様々な基礎科学に関する要素技術があり，それらについて様々な進展を得ることができた。例えば近赤外発光や常温りん光では非放射失活やスピン反転などの制御が重要であり，レーザー特性の向上のためには放射失活を最大化する必要があるなど，励起子過程に関する様々な課題に対して成果が得られた。さらに，デバイス化することで有機光化学に関するより詳しい知見を得るなど，基礎学理の深化に貢献する結果を導出できた。本研究で得られた知見が有機光電子デバイスの研究における技術革新につながる数々のシードとなり，未来社会に貢献すると期待される。
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