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長期安定に向けて:セシウムを含む混合カチオンと混合ハリドペロブスキートの単結晶合金
Liang Chen1, Yan-Yan Tan1, Zhi-Xin Chen1
1State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, and Collaborative Innovation Center of Chemistry for Energy Materials , Xiamen University , Xiamen 361005 , China.
Journal of the American Chemical Society
|January 5, 2019
まとめ
研究者達は新しいセシウムを含む合金を作り 安定したペロブスキート太陽電池を開発しました これらの材料は環境のストレスに対する 優れた耐久性を示し 効率的で長持ちする太陽エネルギー装置の道を開いています
科学分野:
- 材料科学
- 再生可能エネルギー
- 固体化学
背景:
- ペロブスキート製の太陽電池は シリコン基の技術に好ましい代替品です
- ペロブスキート太陽電池の商用化には,長期的な安定性が低いことが重要な課題です.
- 材料の固有の安定性は,分解の問題に対処する上で極めて重要です.
研究 の 目的:
- セシウムを含む混合カチオンと混合ハリドペロブスキート単結晶合金の構造的安定性を体系的に調査する.
- 太陽電池の長期安定性を高める新しいペロブスキート組成物を特定する.
- ペロブスキート材料の安定性を改善するメカニズムを解明する.
主な方法:
- 異なるセシウムとブロミドの含有量を持つ明確に定義されたペロブスキート単結晶合金.
- 光,熱,水,酸素にさらされる構造の安定性を体系的に評価する.
- 安定性の強化メカニズムを理解するために詳細な単結晶構造分析.
主要な成果:
- セシウムおよび/またはブロミド含有量が増加したペロブスキート合金における特定された相分離プロセス.
- 非常に安定したペロブスキート成分が発見された: (FAPbI3) 0.9 ((MAPbBr3) 0.05 ((CsPbBr3) 0.05.
- 16μsのキャリア寿命を達成し,10,000時間 (水-酸素) と1000時間 (光) 以上の安定性を実証した.
結論:
- 開発されたペロブスキート単結晶合金は,安定性調査のための堅固な基盤を提供します.
- 効率的で耐久性の高いペロブスキート太陽電池の開発に不可欠な 特殊な安定性を示しています
- この研究は,安定したペロブスキート材料を発見するための単一結晶ベースのアプローチを確立しています.
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