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アドクトアプローチによる高度に再生可能で効率的なフォームミディニウムペロブスキート太陽電池の分子相互作用の調節
Jin-Wook Lee1, Zhenghong Dai1, Changsoo Lee2
1Department of Materials Science and Engineering and California NanoSystems Institute , University of California , Los Angeles , California 90095 , United States.
Journal of the American Chemical Society
|May 4, 2018
まとめ
研究者は,均一なフォームミジニウム (FA) ペロブスキートフィルムのための新しいアドクト方法を開発しました. DMSOをNMPに置き換えると 安定した中間物質が生み出され,ペロブスキート太陽電池の効率が 20%以上向上します.
科学分野:
- 材料科学
- 再生可能エネルギー
- 太陽光発電
背景:
- ルイス酸塩添加法は,均一なペロブスキート膜の製造に不可欠です.
- フォトアミディニウム (FA) ベースのペロブスキットとの不適合は,光伏の性能と安定性を制限します.
研究 の 目的:
- アドクト方法を用いて高均一なFAPbI3フィルムを製造するための効率的で再現可能な方法を開発する.
- FAベースのペロブスキットの既存の方法の限界を克服する.
主な方法:
- ディメチル硫化物 (DMSO) をN-メチル-2-ピロリドン (NMP) でルイス基として置き換える.
- 安定した中間アダクトフェーズ (FAI·PbI2·NMP) の形成
- 分子相互作用を理解するための赤外線と計算分析
主要な成果:
- 均一で穴のないFAPbI3フィルムの製造
- 20%以上の最高電力変換効率 (PCE) (安定したPCE19.34%) を有するペロブスキート太陽電池の実証.
- 平均PCEは18.83±0.73%に達した.
結論:
- NMPは,より強い相互作用により,FAカチオンとより安定したアダクトを形成する.
- ペロブスキート膜形成に適したルイス基を選択するための基準を確立した.
- この新しい方法は,FAベースのペロブスキート太陽電池の性能と安定性を大幅に改善します.
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