オキシード半導体におけるフレキソエレクトリックのような反応の強化
Jackeline Narvaez1, Fabian Vasquez-Sancho1,2, Gustau Catalan1,3
1Institut Catala de Nanociencia i Nanotecnologia (ICN2), CSIC and The Barcelona Institute of Nanoscience and Technology (BIST), Campus UAB, 08193 Barcelona, Spain.
Nature
|September 27, 2016
まとめ
半導体は,曲げられた場合,断熱器よりも著しく大きなフレキシ電気効果を発揮する. ドーピングは伝導性を増加させ,トランスデューサーの適用のためにこの電気機械的反応を強化します.
科学分野:
- 材料科学
- 固体物理学
- 電気機械現象
背景:
- フレキシ電気性は,曲折などの変形グラデーションによる物質の偏振を記述します.
- 伝統的に介電断熱器の特性と考えられています.
- 半導体は,張力グラデーションの下で無料の電荷を再分配することによって,フレキシ電気性を示すこともできます.
研究 の 目的:
- 半導体におけるフレキシ電気反応を調査し,実証する.
- 半導体材料のフレキシエレクトリック効果を高める方法を探求する.
- 電子メカニカルトランスデューサーの応用における半導体の可能性を評価する.
主な方法:
- 半導体材料の屈曲により,張力グラデーションが生じます.
- 伝導性を修正するために,ワイドバンドギャップの酸化物の単一結晶をドーピングする.
- ドーピングされたサンプルとドーピングされていないサンプルで有効なフレキシ電気係数を測定する.
主要な成果:
- 半導体を曲げると フレキシ電気のような反応が生じます
- 半導体におけるこの反応は,絶縁体よりも著しく大きくなります.
- ドーピングは 効果的フレキシ電気係数を 増加させました
- 障壁層のメカニズムは マクロスケールでの反応の強化を説明します
結論:
- 半導体は,断熱器よりも強いフレキシエレクトリック効果を発揮できる.
- 半導体のフレキシ電気反応はドーピングと伝導性を介して調節できます.
- 半導体は,電気機械的トランスデューサーの活性材料として潜在的な可能性を秘めています.
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