ABX3形式のオーダーされたBサイト空白
Hanna L B Boström1,2, Jonas Bruckmoser3, Andrew L Goodwin1
1Department of Chemistry , University of Oxford , Inorganic Chemistry Laboratory, South Parks Road , Oxford OX1 3QR , U.K.
Journal of the American Chemical Society
|October 31, 2019
まとめ
我々は新しい ABX3 ペロブスキートフレームワークを 合成しました 水晶の構造と性質を変化させ 材料の設計に新たな道を開くことができます
科学分野:
- 材料科学
- 固体化学
- クリスタルグラフィー
背景:
- ABX3ペロブスキットは,電子とエネルギーで応用可能な多用途の材料です.
- 結晶構造の欠陥は材料の性質に大きく影響する.
- フォーマットペロブスキットは,ユニークな構造特性を有するABX3材料のサブクラスです.
研究 の 目的:
- Bサイト空白を含む新しいABX3ペロブスキートフレームワークを合成し,特徴づけること.
- これらの形式のペロフスキットにおけるB部位の空白の順序を調査する.
- これらの欠陥の化学的,構造的,機能的な意味を理解する.
主な方法:
- [C ((NH2) 3) ]Mn1-x ((Fe2 ((3+),□) ((HCOO)) のペロブスキートフレームを合成する.
- X線微分と他の結晶学的技術を用いた構造的特徴づけ.
- モンテカルロのシミュレーションで空席の注文行動をモデル化します.
主要な成果:
- ABX3ペロブスキートフレームワークのBサイト空白の合成と構造的決定を成功させた.
- 特定の組成 (x > 0.6) について,順番の空き配置の観察.
- B場所の空白は,フォーマットペロフスキットの新種の欠陥を表しています.
- 空き席のオーダーに関する実験結果は,モンテカルロシミュレーションと一致しています.
結論:
- Bサイト空白は,フォーマットペロブスキットの重要な欠陥であり,その化学と構造に影響を与えます.
- 空白の順序は結晶の対称性と潜在的に物質の機能性に影響します.
- この研究は,パーソナライズされた材料の設計のための扉を開く,フォーマットペロフスキートの新しい欠陥パラダイムを確立します.
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