What question did this study set out to answer?

The aim is to enhance near-infrared emission from AgAuSe quantum dots using a dielectric metasurface.

April 26, 2026Advanced Optical Materials0 citations

Enhancing Near‐Infrared Emission From AgAuSe Quantum Dots With Dielectric Metasurface Supporting Bound States in the Continuum (Advanced Optical Materials 16/2026)

LXLi XChinese Academy of Tropical Agricultural Sciences RZRuixuan ZhengEducation University of Hong Kong YGYang GuoCzech Academy of Sciences, Institute of Physics

Key Points

The aim is to enhance near-infrared emission from AgAuSe quantum dots using a dielectric metasurface.
Proposed a silicon all-dielectric metasurface supporting bound states in the continuum
Implemented a cation exchange process from Ag2Se quantum dots to AgAuSe
Demonstrated a 15-fold fluorescence enhancement strategy
Achieved a 15-fold increase in near-infrared fluorescence emission.
Successfully illustrated the enhancement through the cation exchange process.
Showed significant PL enhancements for AgAuSe alloyed quantum dots.

Abstract

Quantum Photonic Technologies This cover highlights a 15-fold fluorescence enhancement strategy for emerging near-infrared (NIR) colloidal quantum dots (QDs). The study proposes a silicon all dielectric metasurface that supports bound states in the continuum (BICs) to selectively boost near-infrared emission of environmentally friendly AgAuSe QDs. The cover illustrates the Au+ cation exchange process from Ag2Se quantum dots, demonstrating the PL enhancement of the alloyed quantum dots. More details can be found in the Research Article by Changzhi Gu, Weiping Wu, and co-workers (DOI: 10.1002/adom.202503704).

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