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酸化アイソインディゴ基のアンビポラーポリマーフィールド効果トランジスタ:高性能で環境安定性の向上

Ting Lei¹, Jin-Hu Dou, Zhi-Jun Ma

¹Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.

Journal of the American Chemical Society

|December 1, 2012

まとめ

アイソインディゴ基結合ポリマーのフッ化により,初めてアンビポラー輸送が可能になった. この改変により,電子の移動性が著しく向上し,フィールド効果トランジスタの高孔の移動性が維持されます.

科学分野:

オーガニック・エレクトロニクス
マテリアルサイエンス材料科学

背景:

結合ポリマーは,有機電子機器にとって極めて重要です.
アイソインディゴベースのポリマーは有望であることが示されていますが,しばしば両極性輸送が欠けています.

研究の目的:

イソインディゴ基結合ポリマーにおけるアンビポーラ輸送を調査する.
ポリマーの電子特性に対するフッ素化の影響を調査する.

主な方法:

酸化アイソインディゴ基結合ポリマーの合成.
フィールド効果トランジスタ (FET) の製造と特徴付け.
チャージキャリアの移動性 (電子と穴) の分析.

主要な成果:

アイソインディゴ基結合ポリマーにおけるアンビポーラ輸送の最初の観測.
フッ素化によりLUMOレベルが低下し,電子の移動性が0.43cm(2) V(-1) s(-1) に増加した.
1.85cm(2) V(-1) s(-1) の高孔移動性が維持され,化によりポリマー包装が変化した.

結論:

フッ素化は,イソインディゴポリマーにおける両極性輸送を達成するための効果的な戦略です.
この研究は,有機半導体の構造-特性関係に関する洞察を提供します.
これらの発見は,高性能な有機電子機器の開発を進めています.

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