2018 Fiscal Year Final Research Report

Development of a Low-energy Flat Plane-emission Panel Device Employing Single-walled Carbon Nanotubes

Research Project

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Project/Area Number	26220104
Research Category	Grant-in-Aid for Scientific Research (S)
Allocation Type	Single-year Grants
Research Field	Design and evaluation of sustainable and environmental conscious system
Research Institution	Tohoku University
Principal Investigator	TOHJI Kazuyuki 東北大学, 環境科学研究科, 教授 (10175474)
Co-Investigator(Kenkyū-buntansha)	佐藤義倫東北大学, 環境科学研究科, 准教授 (30374995) 横山俊東北大学, 環境科学研究科, 助教 (30706809) 下位法弘東北大学, 環境科学研究科, 准教授 (40624002) 高橋英志東北大学, 環境科学研究科, 准教授 (90312652) 鳥羽隆一東北大学, 環境科学研究科, 教授 (70508100)
Project Period (FY)	2014-05-30 – 2019-03-31
Keywords	高結晶性単層カーボンナノチューブ / 電界電子放出 / 平面発光パネル / 湿式プロセス / 真空
Outline of Final Research Achievements	In this research and development, we report a newer approach of power and energy efficiency with the use of a simple structure employing the highly crystalline single-walled carbon nanotube (SWCNT) produced by arc discharge method with high-temperature annealing. We successfully fabricated elements of a planar lighting device using a phosphor screen emitting visible light in a simple diode structure composed of the cathode containing the highly crystalline SWCNTs. The anode, on the other hand, was made with phosphor deliberately optimized by coverage of silicon oxides, and it will be assembled together with the cathode by the new stable assembling process resulting to stand-alone flat plane-emission panel. And the phosphors were attempted to control light emission convolution employing long time afterglow of phosphors. We succeeded in clarifying the efficacy and applicability underlying the electrical conductivity of SWCNT by controlling their crystallinity.
Free Research Field	環境学
Academic Significance and Societal Importance of the Research Achievements	本研究開発の実績は、発光デバイスに限らずパワーデバイス等の高パワー密度を必要とするデバイスへの応用展開の可能性も示すことができ、これら成果より、低炭素社会を推進する電子デバイスの先駆的導入に貢献しうる技術開発のベース確立が可能になった。環境負荷低減及び低炭素社会を先導しうる可能性を示す有益な素材と成り得るカーボンナノチューブの電子デバイスへの搭載技術の先駆けとなり、かつ二酸化炭素削減の技術ロードマップに充分追随する成果であると確信する。