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Table 2 Effects of dye adsorption time on electron transport properties of fabricated cells

From: Optimization of dye adsorption time and film thickness for efficient ZnO dye-sensitized solar cells with high at-rest stability

Dye adsorption time (h) Rk/Rw Mean electron lifetime (ms) Effective electron diffusion time (ms) Charge collection efficiency (%) Effective electron diffusion coefficient (×10−3 cm2 s−1) Effective electron diffusion length (μm)
0.5 5.22 8.40 1.61 80.8 4.21 59.4
1 10.61 12.63 1.19 90.6 5.68 84.7
1.5 13.10 12.63 0.96 92.4 7.01 94.1
2 18.43 15.48 0.84 94.6 8.05 111.6
2.5 10.95 13.91 1.27 90.9 5.86 86.0
3 8.68 12.63 1.46 88.5 3.79 76.6
  1. The thickness of the photoelectrode was 26 μm. Rk, charge transfer resistance at the ZnO/electrolyte interface; Rw, electron transport resistance in the ZnO network.