Metallic photoluminescence of plasmonic nanoparticles in both weak and strong excitation regimes

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Abstract: The luminescent nature of plasmonic nanoparticles (NPs) has been intensively investigated in recent years. Plasmon-enhanced electronic Raman scattering and the radiation channels of metallic photoluminescence (PL) involving conventional carrier recombinations and emergent particle plasmons are proposed in the past few decades but largely limited to weak excitation regimes. Here, we systematically examine the PL evolution of plasmonic NPs under different excitation power levels. The spectral resonances and chromaticity of PL are investigated within and beyond the scope of geometry conservation. Results indicate the nature of PL in plasmonic NPs could be a process of graybody radiation, including one factor of plasmonic emissivity in the weak excitation regime and the other factor of blackbody radiation in the strong excitation regime. This comprehensive analysis provides a fundamental understanding of the luminescent nature of plasmonic NPs and highlights their potential applications in transient temperature detection at the nanometer scale.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Metallic photoluminescence of plasmonic nanoparticles in both weak and strong excitation regimes ; volume:13 ; number:18 ; year:2024 ; pages:3355-3361 ; extent:7
Nanophotonics ; 13, Heft 18 (2024), 3355-3361 (gesamt 7)

Creator: Fang, Xiaoguo
Wang, Jiyong
Qiu, Min

DOI: 10.1515/nanoph-2023-0884

URN: urn:nbn:de:101:1-2408261535377.735664212865

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 15.08.2025, 7:31 AM CEST

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Fang, Xiaoguo
Wang, Jiyong
Qiu, Min

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