Table 2 |
||||||
| Effects of dye adsorption time on electron transport properties of fabricated cells | ||||||
| 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 |
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.
Chang et al. Nanoscale Research Letters 2012 7:688 doi:10.1186/1556-276X-7-688
