オーガニック・インターレイヤーのCO2ドーピング
Jaemin Kong1, Yongwoo Shin2, Jason A Röhr1
1Department of Chemical and Biomolecular Engineering, New York University Tandon School of Engineering, New York, NY, USA.
Nature
|June 3, 2021
まとめ
新しい迅速な方法では 二酸化炭素 (CO2) と紫外線を用いて ペロブスキート太陽電池の重要な材料であるスパイロ・オメタッドを ドーピングします 効率的で安定した太陽電池の性能を可能にします
科学分野:
- 材料科学
- 太陽光発電
- オーガニック電子
背景:
- ドーピングされた有機半導体,特にスパイロ-OMeTADは,ペロブスキート太陽電池における重要な電荷抽出インターレイヤーです.
- spiro-OMeTADの電気的性質は,太陽電池の効率に大きな影響を与えます.
- spiro-OMeTADの現在のドーピング方法は,遅い,空気に依存し,商業化を妨げています.
研究 の 目的:
- spiro-OMeTADの迅速で再現可能で効率的なドーピング方法を開発する.
- スパイロ-OMeTADの伝導性を向上させ,ペロブスキート太陽電池の性能を向上させる.
- 有機半導体におけるp型ドーパントとしてのCO2の使用を調査する.
主な方法:
- spiro-OMeTAD:LiTFSI溶液を紫外線でCO2で泡状にすることを含む新しいドーピングプロセスです.
- 光刺激されたスパイロOMeTADを使用して,CO2への電子転送を容易にします.
- CO2処理されたスパイロ-OMeTADフィルムの電気伝導性の特徴
主要な成果:
- CO2で処理されたスパイロ-OMeTAD中間層は,原始フィルムよりも約100倍高い伝導性を示した.
- 安定した高効率のペロブスキート太陽電池は,後処理なしで達成されました.
- この方法は,π結合ポリマーのドーピングにも有効であることが示された.
結論:
- CO2ベースのUVドーピング方法は,スパイロ-OMeTADの伝導性を高めるための迅速かつ効果的な方法を提供します.
- この技術は従来のドーピングの限界を克服し,商業的なペロブスキート太陽電池の道を開きます.
- 開発された方法は汎用性があり,他のπ結合有機半導体にも適用できます.
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