二次元ハイブリッドペロブスキート・フェロエレクトリックにおける大きな電圧係数
Han-Yue Zhang1, Zhi-Xu Zhang1, Xiao-Gang Chen1
1Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, People's Republic of China.
Journal of the American Chemical Society
|January 15, 2021
まとめ
研究者は,最初のフォスフォニウムベースの2Dハイブリッド有機-無機ペロブスキート (HOIP) フェロエレクトリック (EATMP) PbBr4を開発しました. この材料は高キュリー温度と 重要な電気圧縮性を示し 先進的なスマートデバイスへの道を切り開いています
科学分野:
- 材料科学
- 固体物理学
- クリスタルグラフィー
背景:
- 二次元 (2D) ハイブリッド有機-無機ペロブスキット (HOIP) は,光電子と光伏に希望を示しています.
- 2DHOIPにおけるフェロ電気性はよく研究されているが,フォスフォニウムベースの変種とその電圧的性質は未知のままである.
研究 の 目的:
- 最初のフォスフォニウムベースの2DHOIPのフェロエレクトリックを合成し,特徴づけること.
- この新しい材料の 鉄電,ピエゾ電,電圧的性質を調査する.
- スマートデバイスの潜在的応用を探るため
主な方法:
- クリスタル合成と構造的特徴.
- 鉄電気とピエゾ電気の性質の測定
- 電気圧縮係数の決定
主要な成果:
- フォスフォニウムベースの2DHOIPフェロエレクトリックの (EATMP) PbBr4の合成に成功し,直接の帯域ギャップは2.84 eVである.
- 高キュリー温度 (534 K) が発見され,2DHOIPのフェロエレクトリックで報告された最高値である.
- 既存の材料を上回る大きな電圧係数 (3.96 m^4 C^-2) の観測.
結論:
- 新しい (EATMP) PbBr4は2D HOIPのフェロエレクトリックにおける重要な進歩を表しています.
- 優れた熱安定性と電圧性能は,デバイスのアプリケーションに新しい可能性を秘めています.
- この材料は次世代のアクチュエータ,トランスデューサー,センサーの開発に 大きな可能性を秘めています
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