オーダーメイドの2Dペロフスキートを使用した全ペロフスキートタンデムで均質化された接触
Yurui Wang1, Renxing Lin1, Chenshuaiyu Liu1
1National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing, China.
Nature
|October 14, 2024
まとめ
研究者は,トップインターフェースの問題に対処することによって,大規模な全ペロフスキットタンデム太陽電池を改善するための新しい方法を開発しました. このイノベーションにより効率が向上し,商業的なペロブスキート光伏モジュールへの道が開けます.
科学分野:
- 材料科学
- 再生可能エネルギー
- 太陽光発電
背景:
- 拡張可能な全ペロブスキートタンデム太陽電池は,ペロブスキート光伏モジュールの商用化のための鍵です.
- 大面積 (1cm2) のペロブスキート太陽電池は,不均一性のために小面積の装置よりも効率が低い.
- ブロードバンドギャップのペロブスキート太陽電池の不均一性は,底辺のインターフェイス,散発物質,そして重要なことに,電子輸送層の上のインターフェイスから発生します.
研究 の 目的:
- 大規模なペロブスキート太陽電池の性能における上部ペロブスキート/電子輸送層 (ETL) インターフェースの重要な役割を特定し,対処する.
- 1cm2スケールでの不均一性を軽減し,デバイスの性能を改善するための戦略を開発する.
- インターフェースエンジニアリングを通じて,オールペロブスキートタンデム太陽電池の効率を高める.
主な方法:
- 4-フッ素エチラミン (F-PEA) と4-トリフッ素メチルフェニルアモニウム (CF3-PA) の混合物を使用した2Dペロブスキート層 (TTDL) を導入した.
- F-PEAは表面に2Dペロブスキットを形成し,接触損失と不均一性を減少させます.
- CF3-PAは,電荷の抽出と輸送の特性を向上させます.
主要な成果:
- 1.77-eVの広帯域ペロブスキート太陽電池で1.35Vの高開回路電圧 (Voc) と20.5%の効率を達成しました.
- 証明された1.05cm2の全ペロブスキートタンデム太陽電池で,認証された効率は28.2% (報告された28.5%),これまでに報告された最高です.
- トップペロブスキート/ETLコンタクトの設計により,不均一性が減少し,デバイスの性能が向上しました.
結論:
- トップペロブスキート/ETLインターフェースはペロブスキート太陽電池のアップスケールの重要な要因です.
- 開発されたTTDL戦略は,不均一性を効果的に減らし,大面積のペロブスキート太陽電池の性能を向上させます.
- この研究は高効率でスケーラブルな全ペロブスキートタンデム太陽電池の実現に 重要な進展をもたらしました
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