%0 Journal Article
%A Borgwardt, Mario
%A Mahl, Johannes
%A Roth, Friedrich
%A Wenthaus, Lukas
%A Brauße, Felix
%A Blum, Monika
%A Schwarzburg, Klaus
%A Liu, Guiji
%A Toma, Francesca M.
%A Gessner, Oliver
%T Photoinduced Charge Carrier Dynamics and Electron Injection Efficiencies in Au Nanoparticle-Sensitized TiO<sub>2</sub> Determined with Picosecond Time-Resolved X-ray Photoelectron Spectroscopy
%J The journal of physical chemistry letters
%V 11
%N 14
%@ 1948-7185
%C Washington, DC
%I ACS
%M PUBDB-2021-00536
%P 5476 - 5481
%D 2020
%X Progress in the development of plasmon-enabled light-harvesting technologies requires a better understanding of their fundamental operating principles and current limitations. Here, we employ picosecond time-resolved X-ray photoemission spectroscopy to investigate photoinduced electron transfer in a plasmonic model system composed of 20 nm sized gold nanoparticles (NPs) attached to a nanoporous film of TiO2. The measurement provides direct, quantitative access to transient local charge distributions from the perspectives of the electron donor (AuNP) and the electron acceptor (TiO2). On average, approximately two electrons are injected per NP, corresponding to an electron injection yield per absorbed photon of 0.1
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:32545961
%U <Go to ISI:>//WOS:000551546100014
%R 10.1021/acs.jpclett.0c00825
%U https://bib-pubdb1.desy.de/record/454462