"4+2"フェニルリガンドにより高電荷運動性を有する半導体結合ポリマー
Xing Huang1, Shuai Fu2, Cong Lin3
1Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden01062, Germany.
Journal of the American Chemical Society
|January 20, 2023
まとめ
研究者は新しい"4 + 2"フェニルリガンドを使用して,高流動性半導体結合協調ポリマー (c-CPs) を開発した. この画期的な発見により,電子機器の充電媒体の流動性が優れた材料が作られ,先進的な光電子技術が実現しました.
科学分野:
- 材料科学
- 固体物理学
- オーガニック電子
背景:
- 電気伝導性調整ポリマーと金属有機フレームワークは光電子工学にとって有望である.
- 高電荷キャリアのモビリティを持つ半導体調整ポリマーの開発は大きな課題です.
研究 の 目的:
- 高流動性半導体協調ポリマー (c-CPs) の合成のための戦略を実証する.
- 材料構造と電子特性を制御するために,縮小された対称性を持つ新しい結合結合体を利用する.
主な方法:
- D2対称性を持つ"4 + 2"フェニルリガンドを用いたc-CPの合成
- DFT計算,四探査伝導度測定,熱電源測定,超高速テラヘルツ光伝導度を用いた特徴付け.
- 単結晶3Dc-CP,Cu4DHTTBの構造分析
主要な成果:
- 直角リボン状の π-d 結合鎖で単結晶の3D c-CP (Cu4DHTTB) を達成した.
- DFTの計算では,小さなバンドギャップ (~0.2 eV) と低電子穴減少効果質量 (~0.2m0*) が示された.
- 導電性は0.2S/cm,p型導電性は88±15cm2V-1s-1までの高い電荷キャリアの移動性を示した.
結論:
- 縮小対称性リガンドを使用した分子設計戦略は,高機動性半導体c-CPを成功裏に生成します.
- Cu4DHTTBは,以前に報告された導電性3D調整ポリマーと比較して,優れた電荷キャリアの移動性を示しています.
- この研究は,高性能のc-CPベースの光電子機器の開発のための基礎を提供します.
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