電子中立な構成要素と分子内"適合性ロック"を組み合わせることで,安定した,高機動性のpチャンネルとnチャンネルポリマー半導体が得られます
Hui Huang1, Zhihua Chen, Rocio Ponce Ortiz
1Department of Chemistry and the Materials Research Center, Northwestern University, Evanston Illinois 60208, USA.
Journal of the American Chemical Society
|June 12, 2012
まとめ
新しいチエニル・ヴィニレン (TVT) 半導体は,高性能な有機電子を可能にします. これらの安定した平らな材料は,先進的な有機薄膜トランジスタ (TFT) と回路のための高電荷キャリアの移動性を提供します.
科学分野:
- マテリアルサイエンス 材料科学
- オーガニック・エレクトロニクス
- 半導体物理学 半導体物理学
背景:
- 高性能な有機電子機器には,有機薄膜トランジスタ (TFT) の性能に対する分子構造の影響を理解する必要があります.
- 平面型,電子中性ポリマー半導体の開発は重要な目標ですが,合成的な課題に直面しています.
研究 の 目的:
- ティエニル-ビニレン (TVT) の構成要素を基にした,安定した,平らな,高流動性の有機半導体の新種を合成し,特徴づけること.
- TVTビルディングブロックの構造と,その結果生じる半導体の電子特性とデバイスの性能との関係を調査する.
主な方法:
- 簡単にアクセスできる,電子中立のTVTビルディングブロックを使用して,分子内S··O"コンフォメーションロック"を使用しました.
- 密度関数理論 (DFT) 計算,X線 difraktion,および格子連結メトリクスを採用しました.
- 有機薄膜トランジスタ (TFT) と補完的なインバーター回路を製造し,テストしました.
主要な成果:
- 安定した,構造的に平らな,溶液処理可能な分子およびマクロ分子半導体が得られる.
- 空気中の高いキャリアモビリティが実証されています:0.5cm2/V·s (n型) と0.05cm2/V·s (p型).
- インクジェット印刷による高電圧増益 (~50) と高振動周波数 (~1.25 kHz) のリング振動器を備えた,全TVTポリマー補完型インバーター.
結論:
- TVTの構成要素は,弱い電子濃度と超分子平面化により,高性能な有機半導体を作るのに有効です.
- これらの材料は,印刷可能な高得益回路および高周波振動器を含む次世代の有機電子機器に有望である.
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