効率的な固体フォトンのアップコンバーションのためのドナー・レセプター・コレクター・テルナー・クリスタルフィルム
Taku Ogawa1, Masanori Hosoyamada1, Brett Yurash2
1Department of Chemistry and Biochemistry, Faculty of Engineering , Center for Molecular Systems (CMS) , Kyushu University , Moto-oka 744 , Nishi-ku , Fukuoka 819-0395 , Japan.
Journal of the American Chemical Society
|June 26, 2018
まとめ
この研究では,シングレットエネルギーコレクターを用いた新しい固体フォトンの上向き変換法が導入されています. このアプローチにより エネルギー伝達効率が向上し より良い再生可能エネルギー装置のための 光量子収量も倍増します
科学分野:
- 材料科学
- 写真化学
- 再生可能エネルギー
背景:
- 固体フォトンの向上変換 (TTA-UC) は再生可能エネルギーにとって不可欠ですが,染色体の集積と逆エネルギー転送によって効率が制限されます.
- 固体材料における低光量子出力は,TTA-UCデバイスの可能性を阻害する.
研究 の 目的:
- 固体TTA-UCの限界を克服し,高光シングレットエネルギーコレクターを導入する.
- 二重エネルギー移行 (トリプルとシングル) を可能にし,アップコンバージョンの効率を向上させる.
主な方法:
- スピンコーティングを用いたドーナードープされた受容体結晶膜の製造.
- トリプルドナーとしてPt(II) オクタエチルポルフィリン (PtOEP) とシングレットエネルギーコレクターとして2,5,8,11-テトラテート-ブチルペリレン (TTBP) を組み込む.
- エクシトン拡散とエネルギー転送のダイナミクスの特徴.
主要な成果:
- ナノ繊維の受容体結晶で ~37 nm 以上の有効なシングレットエクシトン拡散を達成した.
- TTBPの0.5mol%で 固体光量子出力量を76%に倍増した.
- ドナーとコレクターの分子を隔離することによって,単体バックエネルギー転送を阻害します.
- 変換効率が9.0%に上がった.
結論:
- シングレットエネルギーコレクターと二重エネルギー移行による開発されたスキームは,固体TTA-UCの効率を大幅に高めます.
- 効率的な固体アップコンバーターの合理的な設計原理が確立された.
- このアプローチは,先進的な再生可能エネルギー技術にとって有望な道を示しています.
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