Optical property modulation and optoelectronic conversion in individual carbon nanotubes by gate-induced carriers

2019 Fiscal Year Final Research Report

• Project/Area Number: 16H05962
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Nanostructural physics
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: Kato Yuichiro 国立研究開発法人理化学研究所, 開拓研究本部, 主任研究員 (60451788)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: ナノチューブ・グラフェン / 光物性 / ナノ構造物性 / ナノ物性制御 / ナノマイクロ物理

Outline of Final Research Achievements

Optical and optoelectronic properties of individual carbon nanotubes in field effect devices have been investigated. Split-gate diodes have been used to demonstrate cold exciton electroluminescence, while molecular screening effects on exciton-carrier interactions have been studied using field effect transistor structures. Screening effects from molecules have been utilized to demonstrate all-optical memory operation and spectral tuning of optical coupling to microcavities. Organic molecule adsorption has been used to achieve larger screening effects and to generate trions by inducing carriers.

Free Research Field

光物性・ナノデバイス物理

Academic Significance and Societal Importance of the Research Achievements

加熱の影響が無視できる状況でカーボンナノチューブの電界発光が実現できることを初めて示すことができた。また、キャリアと吸着分子による複雑な遮蔽効果を紐解き、物性を制御して応用するための基礎的な知見を得ることができた。これらの成果は、シリコン基板上の電気駆動のナノスケール光源や高密度で集積可能な光メモリなど、ナノスケールのフォトニクスへの応用が期待される。