Efficient Energy Transfer from Quantum Dots to Closely-Bound Dye Molecules without Spectral Overlap.

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Tác giả: Quinten A Akkerman, David Ederle, Jochen Feldmann, Ivan Infante, Mariam Kurashvili, Jordi Llusar, Lena S Stickel, Tim Würthner

Ngôn ngữ: eng

Ký hiệu phân loại:

Thông tin xuất bản: Germany : Angewandte Chemie (International ed. in English) , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 641821

Quantum dots (QDs) are semiconductor nanocrystals whose optical properties can be tuned by altering their size. By combining QDs with dyes we can make hybrid QD-dye systems exhibiting energy transfer (ET) between QDs and dyes, which is important in sensing and lighting applications. In conventional QDs that need a shell to passivate surface defects, ET usually proceeds through Förster resonance energy transfer (FRET) that requires significant spectral overlap between QD emission and dye absorbance, as well as large oscillator strengths of those transitions. This considerably limits the choice of dyes. In contrast, perovskite QDs do not require passivating shells for bright emission, which makes ET mechanisms beyond FRET accessible. This work explores the design of a CsPbBr
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