ハイブリッド・レイヤード・ダブル・ペロフスキット・ハライド
Pratap Vishnoi1,2, Julia L Zuo1, Xiaotong Li3
1Materials Department and Materials Research Laboratory, University of California, Santa Barbara, California 93106, United States.
Journal of the American Chemical Society
|April 4, 2022
まとめ
この研究は,調整可能な光学帯のギャップを持つ新しいハイブリッド層の二重ペロブスキート (HLDP) ハリドを導入します. 新しい材料は,高度なアプリケーションのための主要なグループ要素を超えてHLDPの範囲を拡張します.
科学分野:
- 材料科学
- 固体化学
- 無機化学
背景:
- ハイブリッド層の二重ペロブスキート (HLDP) ハリドは,ペロブスキート層内にヘクサコーディネートされた金属カチオンと有機カチオンを隔離物として備えています.
- 以前のHLDPの研究は,主グループ3+アイソエレクトロニクスとPb (II) に焦点を当て,材料の多様性を制限しました.
- A2MIMIIIX8ファミリーは,HLDPの新しいクラスを表しています.
研究 の 目的:
- 伝統的なメイングループ要素を超えた新しいHLDPハリドを合成し,特徴づけること.
- これらの新しい材料の光学帯のギャップの調節性を調査する.
- 選択されたHLDPハリドの磁気特性を探求する.
主な方法:
- A2MIMIIIX8ファミリーの8つの新しいHLDPハリドの合成
- 光学帯のギャップ (1.552.05 eV) をスペクトロスコーピで特徴づける.
- 特定のRu (III) とMo (III) を含む化合物の磁気感受性測定
主要な成果:
- 様々な有機分離剤 (PPDA,1,4-BDA,1,3-PDA) と金属イオン (Cu,Ag,Ru,Mo) を使って8つの新しいHLDPハリドを合成しました.
- 1.55から2.05eVまでの可調光学帯のギャップが示され,層の組成に依存するが,大部分は有機スペーサーから独立している.
- 磁気学の研究では,磁気順序の移行が示されず,Mo (III) はキュリー-ワイスの行動を示し,Ru (III) はコタニ理論からの偏差を示した.
結論:
- 報告されたHLDPハライドは,RuやMoのような移行金属を組み込んで,これらの材料の組成の風景を拡大します.
- 調節可能な光学特性により,これらの新しいHLDPは光電子アプリケーションに有望である.
- これらの構造におけるMo (III) とRu (III) の独特の磁気行動は,さらなる調査を正当化している.
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