C60ベースのイオン塩電子シャトル 高性能の逆転ペロブスキート太陽電池
Shuai You1, Hongwei Zhu2, Zhongjin Shen3
1Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, USA.
まとめ
研究者はペロブスキート太陽電池の電子輸送層としてバクミンスターフルレン (C60) を置き換える新しいイオンフルレン塩であるCPMACを開発しました. このイノベーションにより,インターフェースの安定性とデバイスの寿命が大幅に向上し,高い電力変換効率を達成できます.
科学分野:
- 材料科学
- 再生可能エネルギー
- ナノテクノロジー
背景:
- バックミンスターフルレン (C60) は,ペロブスキート太陽電池 (PSC) の一般的な電子輸送層 (ETL) である.
- C60の分子性質は,PSCの電子的および機械的分解を引き起こし,弱いインターフェースにつながります.
- PSCの性能と安定性を高めるには,インターフェイスの性能の改善が不可欠です.
研究 の 目的:
- 逆転PSCにおけるETLとして新しいイオンフルレン塩であるCPMACを合成し,評価する.
- インターフェースの電子的および機械的特性に対するCPMACの影響を調査する.
- CPMACを使用するPSCの長期の運用安定性と効率性を評価する.
主な方法:
- フルレノ-C60-Ih-[1,9-c]ピロール-2'-イール) フェニルメタナミウム塩化物 (CPMAC) の合成
- ETLとしてCPMACを使用した逆転PSCの製造.
- 操作上のストレス下でのインターフェイス特性とデバイスの性能の特徴.
主要な成果:
- CPMACは,イオン性および改善されたパッキングにより,C60と比較して,インターフェイスの強度 (約3倍) を高めています.
- CPMACを使用したPSCは,約26%の高い電力変換効率 (PCE) を達成しました.
- 装置は,65°Cで2100時間の動作後に~2%の分解率で優れた安定性を示した.
結論:
- CPMACは,インターフェイスの安定性とデバイスの長寿を改善する,逆転PSCのための有望な代替ETL材料です.
- CPMACのイオン性と特定のカチオンヘッドグループは,性能と耐久性を高めます.
- CPMACは高効率で安定したペロブスキート太陽電池を実現し,商業的な応用への道を切り開いています.
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