Preparation Mico/Nano Composite Particles and their Applications for Dye-Sensitized Solar Cells

Abstract:

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This study investigated the applicability of TiO2/Au (or TiO2/Ag) composite particles, which probably have the plasmon resonance effect, on FTO-glass substrate of the working electrode of a DSSC. The dry particle coating technique was utilized to coat the surfaces of TiO2 particle with nano-sized Au (or Ag) powder particles. A layer of TiO2/Au (or TiO2/Ag) composite particles was deposited on the FTO-glass substrate of the working electrode, and it was then sintered in a high-temperature furnace. The working electrode covered with a TiO2/Au (or TiO2/Ag) thin film was kept immersed in a solution of N-719 (Ruthenium) dye for 12 h. Finally, the DSSC was assembled, and the short-circuit photocurrent; the open-circuit photovoltage, and the power conversion efficiency η of DSSC were measured using a home-made I-V measurement system. This study also examined the effects of the mass ratio of TiO2 to Au (or Ag) and the duration of dry coating on the η of the DSSC. If the duration of dry coating is adequate, the η of the DSSC with TiO2/Au (or TiO2/Ag) composite particles increased with increase in the percentage of Au (or Ag) in the composite particles. Most importantly, this study shows that the power conversion efficiency η of the DSSC with a film of TiO2/Au (or TiO2/Ag) on the working electrode always exceeds that of the conventional DSSC due to presence of the Schottky barrier, which is probably created in the TiO2/Au (or TiO2/Ag) composite particle.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

202-205

DOI:

10.4028/www.scientific.net/AMR.239-242.202

Citation:

T. L. Chiang et al., "Preparation Mico/Nano Composite Particles and their Applications for Dye-Sensitized Solar Cells", Advanced Materials Research, Vols. 239-242, pp. 202-205, 2011

Online since:

May 2011

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Price:

$35.00

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