Figure 5.

Nyquist plots of the DSSCs using TiO2 film and ZrO2 nanofiber-doped TiO2 film. Black circle, 0 wt.%; red diamond, 3 wt.%; cross mark, 5 wt.%; green triangle, 7 wt.%.

Wang et al. Nanoscale Research Letters 2012 7:98   doi:10.1186/1556-276X-7-98
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