Fabrication and Characterization of Photoelectrode Thin Films with Different Morphologies of TiO2 Nanoparticles for Dye-Sensitized Solar Cells
Authors: Kao, Mu-Jung; Chang, Ho; Kuo, Chin-Guo; Huang, Kuohsiu-David; Chen, Yu-Ling
Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 8, August 2011 , pp. 7459-7462(4)
Publisher: American Scientific Publishers
Abstract:This study deals with the fabrication of three different morphologies of TiO2 nanoparticles to fabricate two-layer photoelectrode thin film for dye-sensitized solar cells (DSSC). The four different TiO2 morphologies are titania nanotubes (Tnt), TiO2 nanoparticles (H220), TiO2 nanoparticle (SP) and commercial DP-25 nanoparticles (P-25). To prepare the thin films of the photoelectrodes, the first layer is coated by H220 TiO2 nanoparticles, and the second is coated by 3 kinds of materials optimally proportionally mixed – P25, SP and Tnt. The photoelectric conversion efficiency of DSSCs with photoelectrodes fabricated using H220 reached 6.31%. Finally, the TiO2 nanaomaterials with four different morphologies were used to prepare a two layer photoelectrode with the structure of H220/P25-Tnt-SP which was combined with a Pt counter electrode to assemble DSSCs. These DSSCs had photoelectric conversion efficiencies of as high as 7.47%.
Document Type: Research Article
Publication date: August 1, 2011
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