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Updated: May 21, 2026
Digital Printing of Titanium Dioxide for Dye Sensitized Solar Cells
Published on: May 4, 2016
TiO2 composing with pristine, metallic or semiconducting single-walled carbon nanotubes: which gives the best
Guan Hong Guai1, Yao Li, Chee Mang Ng
1School of Chemical & Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore.
Abstract:
Different types of single-walled carbon nanotubes (SWCNTs), pristine (p-), metallic (m-) and semiconducting (s-) are incorporated into TiO(2) photoanodes to improve the dye-sensitized solar-cell (DSSC) performance and their effects on the device performance are further investigated. Although all three types of SWCNTs are found to have comparable structural morphologies and a reduced charge transport resistivity for the photoanodes, only the semiconducting one was able to suppress charge-recombination events, resulting in even greater improvement of DSSC performances. This is very likely to be ascribed to the higher energy barrier of s-SWCNTs compared to both m- and p-SWCNTs to block the back flowing of dye-injected electrons for I(3)(-) reduction in the charge recombination process.
