ナフタレネディカルボキシミド-対ペリレネディカルボキシミドベースの共ポリマー. ボトムゲートNチャンネル有機トランジスタの合成と半導体特性
Zhihua Chen1, Yan Zheng, He Yan
1Polyera Corporation, 8045 Lamon Avenue, Skokie, Illinois 60077, USA.
Journal of the American Chemical Society
|December 19, 2008
まとめ
2つの新しいポリマー半導体,P(NDI2OD-T2) とP(PDI2OD-T2) は,有機薄膜トランジスタ (TFT) のために合成されました. P(NDI2OD-T2) は,環境条件下での優れた電子移動性と安定性を示し,P(PDI2OD-T2) を上回っています.
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
- ポリマー化学のポリマー化学について
背景:
- 有機薄膜トランジスタ (OTFT) は,柔軟な電子機器に不可欠です.
- 高性能なnチャネル有機半導体の開発は依然として課題です.
- ペリレン・ナフタレン・ジカルボキシミド (PDIとNDI) 誘導体は,有望な構成要素である.
研究 の 目的:
- 2つの新しいnチャネルポリマー半導体を合成し,特徴づけること.
- リレンコモノマーがポリマーの性質とデバイスの性能に及ぼす影響を調査する.
- 高性能OTFTアプリケーションにおけるこれらのポリマーの可能性を評価する.
主な方法:
- 2つの交互のコポリマー:P(NDI2OD-T2) とP(PDI2OD-T2) の合成は,NDIとPDIの単位をディチオフェンでポリマー化することによって行われます.
- これらのポリマーを使用して,最適化されていない有機薄膜トランジスタ (OTFT) の製造.
- ポリマーの地域規則性,電子構造,および電荷輸送特性の特徴.
主要な成果:
- P(NDI2OD-T2) は,P(PDI2OD-T2) に比べて,より高い地域規則性と分子量を示しています.
- P(NDI2OD-T2) ベースのTFTは,P(PDI2OD-T2) (2x10−4 cm2/V·s 1.5週間後に環境で) と比較して,電子の移動 (0.01 cm2/V·s環境で) と安定性 (16週間) が著しく向上しています.
- 両ポリマーは,高いオンオフ電流変調比 (>106) を達成する.
結論:
- リレンコモノマー (NDI vs. PDI) の選択は,ポリマーの領域規則性および電子特性に大きな影響を与える.
- NDIベースのポリマーは,環境OTFTの優れた電子輸送安定化と性能を提供します.
- これらの新しいPDIおよびNDIベースのポリマーは,先進的な有機電子機器のための有望な材料を表しています.
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