溶液処理可能な超原子薄膜
Jingjing Yang1, Boyuan Zhang1, Alexander D Christodoulides2
1Department of Chemistry , Columbia University , New York , New York 10027 , United States.
Journal of the American Chemical Society
|July 2, 2019
まとめ
研究者はナノスケールクラスターから新しいイオン超原子物質を開発しました. これらの無形薄膜は 従来の結晶とは異なり 高伝導性や透明性などの 調節可能な性質を備えており 先進的な電子や熱電気装置の道を開いています
科学分野:
- 材料科学
- ナノテクノロジー
- 固体化学
背景:
- 原子的に精密なナノスケールクラスターは,静電相互作用によって結晶イオン固体を形成することができます.
- これらのクラスターの結晶化により 秩序ある構造が形成され 潜在的応用が制限されます
研究 の 目的:
- 柔軟なサイドチェーンを使用して,ナノスケールのクラスターにおける静電相互作用の挫折を調査する.
- 電子と熱電学的用途のために調整可能な新型無形超原子材料を開発する.
主な方法:
- 長くて柔軟なサイドチェーンでナノスケールの大群を合成し 静電相互作用を阻害しました
- これらのクラスターを溶液処理して無形で均質な薄膜にします.
- 超原子材料の電気的,熱的,光学的性質を特徴づけた.
主要な成果:
- 結晶化を阻害する無形なイオン超原子物質を 達成した.
- 非常に高い電気伝導性 (300S/mまで) を有する調節可能な組成物.
- 観測された超低熱伝導度 (0.05 W/m·K) と高光学透明度 (最大92%).
- 望ましい,最適化されていないZT値は0.02です.
結論:
- イオン超原子材料は,クラスター間の相互作用を制御することによって,無形薄膜に処理することができます.
- これらの無形な材料は,結晶の対称性に見られないユニークな性質を示します.
- 超原子薄膜は,電子機器や熱電気装置のための有望な新しい材料のクラスです.
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