Plasmons Enhancing Sub-Bandgap Photoconductivity in TiO2 Nanoparticles Film
Mohammed A. Ibrahem,
Emanuele Verrelli,
Ali M. Adawi
et al.
Abstract:The coupling between sub-bandgap defect states and surface plasmon resonances in Au nanoparticles and its effects on the photoconductivity performance of TiO 2 are investigated in both the ultraviolet (UV) and visible spectrum. Incorporating a 2 nm gold nanoparticle layer in the photodetector device architecture creates additional trapping pathways, resulting in a faster current decay under UV illumination and a significant enhancement in the visible photocurrent of TiO 2 , with an 8-fold enhancement of the de… Show more
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