柔軟なプラスチック基板の上に設置された中規模の炭素ナノチューブ薄膜集積回路
Qing Cao1, Hoon-sik Kim, Ninad Pimparkar
1Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Nature
|July 25, 2008
まとめ
プラスチック上の単一壁の炭素ナノチューブネットワークを使用して,高性能の柔軟な統合回路が作成されました. これらの回路は,優れたトランジスタ特性を提供し,柔軟な電子機器のための新しい可能性を可能にします.
科学分野:
- マテリアルサイエンス 材料科学
- 電気工学 電気工学とは
- ナノテクノロジー ナノテクノロジー
背景:
- 柔軟なエレクトロニクスは,従来の硬い基板に比べてユニークな利点を提供します.
- 既存の有機および無機の柔軟な半導体は,性能が限られている.
- 高性能な柔軟な集積回路は,高度なアプリケーションに必要です.
研究 の 目的:
- 炭素ベースの半導体を使用して高性能な柔軟な統合回路を開発する.
- 柔軟な電子機器のための単一壁の炭素ナノチューブネットワークの使用の可行性を実証する.
- これらの集積回路におけるトランジスタの性能と特性を特徴付ける.
主な方法:
- プラスチック基板に単壁カーボンナノチューブのサブモノレイヤ,ランダムなネットワークの実装.
- 最大100個のトランジスタを備えた中小規模の統合デジタル回路の製造.
- トランジスタの性質の特徴は,移動性,下値の傾き,動作電圧,オン/オフ比,スイッチング速度などです.
- 輸送,コンパクトモデル,回路シミュレーションを含む理論的な計算.
主要な成果:
- 高トランジスタ移動度 (最大80cm2/Vs) とオン/オフ比 (最大105) を達成しました.
- 低動作電圧 (<5V) と制御された値電圧が実証されています.
- 展示されたキロヘルツのスイッチング速度は,粗いデバイスの幾何学 (約. 100μm) である.
- 優れた機械的柔軟性,均一性,再現性を示し,高収量製造を可能にしました.
結論:
- 単一壁の炭素ナノチューブのサブモノレイヤーフィルムは,高性能の柔軟な統合回路のための有望な材料です.
- これらの材料は,優れた特性を持つプラスチック基板上で機能的な統合回路の作成を可能にします.
- 開発された技術は,コンシューマー・エレクトロニクスやそれ以上の分野での応用に大きな可能性を秘めています.
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