Interplay Between Intra- And Interband Transitions Associated With The Plasmon-Induced Hot Carrier Generation Process In Silver And Gold Nanoclusters
JOURNAL OF PHYSICAL CHEMISTRY C(2020)
摘要
In the last decades, theoretical and experimental studies of nanostructured materials have gathered the efforts of a big slice of the scientific community. Light-nanostructure interaction has been a preponderant research topic fueled by the interest in the plasmonic properties of metallic nanostructures. More recently, the study of plasmon-induced hot carrier generation has drawn the attention of scientists because of their potential application in optoelectronics, photovoltaics, and photocatalysis. In this contribution, we study the real-time electronic dynamics associated with the generation of hot carriers in silver and gold nanoparticles focusing on their energy distribution and atomic shell population/depopulation dynamics. Revisiting our previous results from the perspective of a generalized 2D correlation analysis paves the way to disentangle complex dynamic outcomes, such as the dissipation of the sp-band energy absorbed during plasmonic excitation. We show that this mechanism is founded on the dynamic cross-correlation between sp-band and d-band electronic populations.
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