高ゲインと超低電力で動作する印刷されたサブスリーフオーガニック・トランジスタ
Chen Jiang1,2, Hyung Woo Choi1, Xiang Cheng1,3
1Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK.
Science (New York, N.Y.)
|February 16, 2019
まとめ
研究者らは,Schottkyバリアを使用して,インクジェットプリントされた高得率の有機トランジスタアンプを開発しました. この超低電力装置は 理論的な増幅効率を達成し ウェアラブル・エレクトロニクスにおける 重要な課題を克服しています
科学分野:
- オーガニックの電子機器
- 半導体装置の物理
- バイオ・インテグレーテッド・エレクトロニクス
背景:
- ウェアラブル・エレクトロニクスは 電力消費,製造コスト,信号増幅のバランスをとる課題に直面しています
- 既存のソリューションにはしばしば性能と適用性を制限するトレードオフが含まれます.
研究 の 目的:
- 高得度でインクジェット印刷された ショットキー・バリア有機薄膜トランジスタの 増幅回路を報告する
- 現在のウェアラブル・エレクトロニクスシステムの 限界を解決するためです
主な方法:
- インクジェット印刷を用いた有機薄膜トランジスタ (OTFT) の製造
- ソース電極にショットキー・バリアを組み込む.
- トランジスタの電気特性と増幅器回路の性能の特徴.
主要な成果:
- シグナル増幅効率は 38.2 シメンス/アンペアで 理論上の限界に近い
- 1ナノワット未満の超低電力消費を証明した.
- Schottkyバリアにより,インクジェット印刷のバリエーションに対応する,幾何学的に独立した電気特性を示した.
- 値電圧のシフトを無視して高い信頼性を示した.
- 信号対ノイズ比>60dBと低ノイズ電圧 (100Hzで<0.3μV/√Hz) の電気生理学的信号検出のための増幅器を成功裏に実装しました.
結論:
- 開発されたSchottkyバリア有機薄膜トランジスタアンプは,ウェアラブルエレクトロニクスの超低電力,高得益アプリケーションに有望なソリューションを提供します.
- インクジェット印刷は 費用対効果の高い高性能な製造を可能にし,以前の制約を克服しました.
- デバイスの信頼性と性能指標は,繊細な電気生理学的信号検出に適しています.
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