非中心対称ハイブリッドペロフスキットの合理的な設計

Rayan Chakraborty¹, Parikshit Kumar Rajput¹, Gokul M Anilkumar²

¹Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411008, India.

Journal of the American Chemical Society

|January 3, 2023

まとめ

研究者らはハイブリッド・ペロブスキットの新しい設計を開発し,非中心対称な構造を作り出した. 半導体材料の非線形光学特性と異常な光学効果を調整できます

科学分野:

材料科学
固体化学
光電子機器

背景:

ハイブリッドペロブスキットの構造的非中心対称性は,高度な機能の鍵です.
既存の材料には,最適な性能のために必要な正確な対称性制御が欠けています.
有機と無機のハイブリッドハロイドは材料の特性を調整する多用途のプラットフォームです

研究の目的:

極性非中心対称性ハイブリッドペロブスキットを製造するための設計原理を導入する.
これらの新材料の非線形光学および異常光伏特性を探求する.
新しい二次元と一次元PbとBiベースのハイブリッドペロブスキットを合成する.

主な方法:

異なる水素とハロゲン結合の相互作用を持つ設計された有機カチオン.
合成された二次元 (MIPA) 2PbI4と一次元 (H3N- ((CH2) 3-NH ((CH3) 2) BiI5のペロブスキート.
非線形光学特性 (第2次および第3次ハーモニック世代) と光伏効果の特徴

主要な成果:

(MIPA) 2PbI4は可視から赤外線まで調整可能な非線形光学特性を示した.
この2Dのペロブスキットは可視光の下では異常な光伏効果を示した.
1D (H3N-(CH2) 3-NH(CH3) 2) BiI5は,重要な第2ハーモニック生成と高いオープン回路電圧 (22.6V) を示した.

結論:

設計原理により,非中心対称のハイブリッドペロブスキートが得られました.
これらの材料は,非線形光学および異常光学機能を有しています.
この研究は,パーソナライズされたペロブスキート構造に基づいた先進的な光電子装置の開発への道を開きます.

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