高効率で安定したペロブスキート太陽電池のためのアロマティックケトンの空間構成工学
Xiaoqing Jiang1,2, Lina Zhu1, Bingqian Zhang3,4
1College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
Journal of the American Chemical Society
|December 9, 2024
まとめ
分子構造はペロブスキート太陽電池 (PSC) の性能に大きく影響します. 平面アロマティックケトンは,カルボニル受動性を高め,PSCの効率と安定性を高めます.
科学分野:
- 材料科学
- 太陽光発電
- 有機化学
背景:
- 炭酸塩を含有する材料は,ペロブスキート太陽電池 (PSC) の欠陥被動化に不可欠です.
- これらの受容器の有効性に対する分子構成の影響はよく理解されていません.
- 活性化剤の分子設計を進めるには,構造と有効性の関係について明確にする必要があります.
研究 の 目的:
- アロマティックケトンの分子空間的構成がPSCにおける欠陥受動能力に与える影響を調査する.
- アロマティック・ケトンのトルション・アングルと,その電子ドナー特性と,受動性の有効性を相関させる.
- PSCの性能と安定性を向上させるため,アロマティックケトンパッシバターの設計を最適化する.
主な方法:
- 異なるトルション角度を持つアロマティックケトン:ベンゾフェノン (BP, 27.2°),アンスロン (AR, 15.3°),および9-フローレノン (FO, 0°) を合成し,特徴づけました.
- ハリド鉛ペロブスキート太陽電池に 組み込みました
- パワー変換効率 (PCE) と連続照明下での動作安定性を含む装置の評価性能.
主要な成果:
- アロマティックケトンのトルション角度を変更すると,カルボニル群の周囲の電子雲密度が増加し,鉛ベースの欠陥の受動性を高めます.
- コプラナー9-フローレノン (FO) の受動化PSCは,PCEの最高値25. 13%を達成した.
- FOベースのPSCは,1000時間の連続的な1日照明後に92%の初期効率を保持し,優れた安定性を示した.ミニモジュールは20.19%のPCEを達成した.
結論:
- アロマティックケトンの分子形状,特にトルションの角度は,PSCにおける受動性の有効性を決定的に影響する.
- カーボニル電子密度が増加した平面アロマティックケトンは,より高い効率と安定性につながる優れた受容体である.
- この研究は,次世代の高効率で安定したPSCのための高度なアロマティックケトンパシバターを設計するための貴重な洞察を提供します.
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