Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/16682
Title: Influence of Au nanoparticles on the properties of TiO2 film for use in DSSC
Authors: HU XIAOPING
Keywords: Solar cells, TiO2, Au nanoparticles, Surface plasmon resonnance, Photocurrent, Dye-sentization
Issue Date: 17-Mar-2009
Source: HU XIAOPING (2009-03-17). Influence of Au nanoparticles on the properties of TiO2 film for use in DSSC. ScholarBank@NUS Repository.
Abstract: Gold nanoparticles are incorporated into TiO2 film to improve the photon-electron conversion efficiency in the visible region, by making use of the surface plasmon resonance (SPR) of the Au. To investigate the influence of SPR from Au particles on the photocurrent of TiO2 films, Au/TiO2 composites with different Au concentrations were synthesized by the sol-gel method. The SPR performance of the Au nanoparticles was related to their size, the TiO2 matrix and the Au distribution in the composite. It was also found that this SPR performance did not contribute to the photon-electron conversion in the visible region, but depressed the photocurrent produced by the TiO2 film in the UV region. After adding a pure TiO2 blocking layer between the composite and the back contact electrode, the dark current was reduced. Additionally, in the presence of dye-sensitization at low Au levels this structure improved the photocurrent in the visible region.
URI: http://scholarbank.nus.edu.sg/handle/10635/16682
Appears in Collections:Ph.D Theses (Open)

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