Simultaneous Hot Electron and Hole Injection upon Excitation of Gold Surface Plasmon

Yocefu Hattori, Mohamed Abdellah, Jie Meng, Kaibo Zheng, Jacinto Sá*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

We have successfully investigated the simultaneous injection of hot electrons and holes upon excitation of gold localized surface plasmon resonance (LSPR). The studies were performed on all-solid-state plasmonic system composed of titanium dioxide (TiO2)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) p-n junctions with gold nanoparticles (Au NPs). The study revealed that both charge carriers are transferred within 200 fs to the respective charge acceptors, exhibiting a free carrier transport behavior. We also confirmed that the transfer of charge carriers are accompanied by change in the initial relaxation dynamics of Au NPs.
Original languageEnglish
JournalJournal of Physical Chemistry Letters
Volume10
Issue number11
Pages (from-to)3140-3146
Number of pages7
ISSN1948-7185
DOIs
Publication statusPublished - 2019

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