Plasmonic Hot Electron Solar Cells: The Effect of Nanoparticle Size on Quantum Efficiency

Philipp Reineck, Delia Brick, Paul Mulvaney, Udo Bach

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104 Citations (Scopus)


Gold nanoparticles located at a metal oxide/hole conductor interface generate photocurrents upon visible light illumination. We demonstrate that the quantum efficiency of this process depends on the nanoparticle size. Gold nanoparticles (5 nm) show a maximum absorbed photon-to-electron conversion efficiency (APCE) of 13.3%. For increasing particle sizes, the average APCE decreases to 3.3% for the largest particles (40 nm) investigated. Three possible causes for this efficiency change are discussed.

Original languageEnglish
Pages (from-to)4137-4141
Number of pages5
JournalJournal of Physical Chemistry Letters
Issue number20
Publication statusPublished - 20 Oct 2016

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