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逆平面ヘテロジュンクションペロブスキート太陽電池の強化光電
Deying Luo1,2, Wenqiang Yang1, Zhiping Wang3
1State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, China.
Science (New York, N.Y.)
|June 30, 2018
まとめ
研究者らは,逆転構造における再結合損失を減らすことで,ペロブスキート太陽電池 (PSC) を改善しました. この戦略はオープン回路電圧 (Voc) を高め,次世代太陽光発電の全体的な電力変換効率を高めます.
科学分野:
- 材料科学
- 再生可能エネルギー
- 太陽光発電
背景:
- 逆平面構造のペロブスキート太陽電池 (PSC) は,主にオープン回路電圧 (Voc) の減少により,通常の構造と比較して低電力変換効率 (PCE) を示しています.
- 非放射性再結合は,反転PSCにおけるVocを制限する重要な要因であり,その商業的活性を阻害する.
研究 の 目的:
- 逆転ペロブスキート太陽電池における非放射性再結合を減らすための戦略を開発する.
- 逆回転PSCのオープン回路電圧 (Voc) と電力変換効率 (PCE) を向上させる.
主な方法:
- 溶液処理による単純な二次成長技術は,ペロブスキート膜を修正するために使用されました.
- この方法は,より広いバンドギャップの上層層とより n 型ペロブスキートフィルムを作成することを目的とした.
主要な成果:
- 二次成長技術は,反転PSCにおける非放射性再結合を成功裏に緩和しました.
- 100ミリボルトまでのオープン回路電圧 (Voc) の増加が達成されました.
- 1.21ボルトの高いVocが記録され, 1.62 eVの帯域間隔で0.41ボルトの低い電圧赤字が記録されました.
- 安定した出力量は21%に達した.
結論:
- 開発された二次成長方法は,非放射性再結合を減らすことで,反転PSCのVocを効果的に強化します.
- このアプローチは,逆転ペロブスキート太陽電池の性能を向上させ,通常の構造と競争できるようにする実用的な経路を提供します.
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