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<p>This paper explores gold resonator effects on the optical properties of chemically synthesized clusters of CdSe/CdS/ZnS nanocrystals. To reduce optical losses, the gold is sputtered on the aggregates already embedded in a thin silica shell. This technique also allows to compare optical properties (radiation rate, far field emission) of single aggregates of different diameters before and after gold deposition. Experimental results are supported by finite-difference time domain (FDTD) simulations to understand the size-dependent behavior and the role of dipolar and quadrupolar plasmon resonances.</p>

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Size-Dependent Optical Properties of CdSe/CdS/ZnS Nanocrystal Aggregates Encapsulated in a Gold Nano-resonator: A Comprehensive Study

  • 期刊论文

  • 发表日期：

    2025年11月5日

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  • Thi Hien Phan,
  • Guillaume Quibeuf,
  • Thomas Pons,
  • Nicolas Lequeux,
  • Aymeric Delteil,
  • Jean-Pierre Hermier,
  • Stéphanie Buil

摘要

This paper explores gold resonator effects on the optical properties of chemically synthesized clusters of CdSe/CdS/ZnS nanocrystals. To reduce optical losses, the gold is sputtered on the aggregates already embedded in a thin silica shell. This technique also allows to compare optical properties (radiation rate, far field emission) of single aggregates of different diameters before and after gold deposition. Experimental results are supported by finite-difference time domain (FDTD) simulations to understand the size-dependent behavior and the role of dipolar and quadrupolar plasmon resonances.