液晶半導体共ポリマーは,高安定性ポリマートランジスタのための分子内ドナー-受容体の構成要素を備えています
Do Hwan Kim1, Bang-Lin Lee, Hyunsik Moon
1Display Laboratory, Materials and Device Institute, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd., Yongin 446-712, Korea.
Journal of the American Chemical Society
|April 10, 2009
まとめ
研究者らは,印刷電子機器用の新型液晶半導体ポリマーを開発した. この材料は,高電荷キャリアの移動性と安定性を達成し,先進的な有機フィールド効果トランジスタ (OFET) の道を開く.
科学分野:
- マテリアルサイエンス 材料科学
- ポリマー化学のポリマー化学について
- オーガニック・エレクトロニクス
背景:
- 液晶ポリマー半導体における分子組織を制御することは,信頼性の高い印刷電子機器にとって極めて重要です.
- オーガニック・フィールド・エフェクト・トランジスタ (OFET) の性能を改善するには,液晶ナノ構造と電気的安定性を理解する必要があります.
- 無形シリコン (a-Si) に匹敵する性能を達成することは,有機電子学の重要な目標です.
研究 の 目的:
- 電子機器の性能を向上させるための新しい液晶半導体共ポリマーを開発する.
- コポリマーのナノ構造と電気的安定性との関係を調査する.
- 印刷電子機器のための高度にオーダーされた半導体層の簡単な製造を可能にします.
主な方法:
- 新種のドナー・アクセプター液晶半導体共ポリマー:ポリ (poly ((didodecylquaterthiophene-alt-didodecylbithiazole) の合成について.
- 薄膜の製造と,その液体結晶の性質と自己組織化の特徴.
- オーガニックフィールドエフェクトトランジスタ (OFET) の電気試験で,フィールドエフェクトモビリティとバイアス・ストレスの安定性を決定する.
主要な成果:
- 合成コポリマーは,0.33cm2/V·sまでの高フィールド効果の可動性を示しています.
- この材料は,アモルフなシリコン (a-Si) と比較できる良好なバイアス・ストレスの安定性を示しています.
- 構造的アニソトロピーと,基板に平行して優先的なpi-piの積み重ねを持つ液晶薄膜の自発的形成が観察されました.
結論:
- 新しい液晶半導体共ポリマーは,高度に秩序付けられたチャネル層のボトムアップ組立を促進します.
- このアプローチにより,処理が簡単で,信頼性があり,高性能な有機フィールド効果トランジスタ (OFET) の開発が可能になります.
- この発見は,広域印刷電子機器と太陽光発電の進歩に寄与する.
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