Table 1.
J - V characteristics of DSCs based on planar and conical island structures of TiO 2 nanotube arrays
| Sample | Photoelectrode | J sc (mA/cm 2 ) | V oc (V) | Fill factor | Efficiency |
|---|---|---|---|---|---|
| (a) | Planar structure, 1.0 μm | 3.031 | 0.665 | 0.574 | 1.159 ± 0.104 |
| (b) | Planar structure, 1.5 μm | 3.279 | 0.636 | 0.549 | 1.147 ± 0.167 |
| (c) | Planar structure, 2.0 μm | 4.030 | 0.636 | 0.536 | 1.378 ± 0.092 |
| (d) | Conical island structure, 1.0 μm | 4.249 | 0.658 | 0.571 | 1.598 ± 0.067 |
| (e) | Conical island structure, 1.5 μm | 5.620 | 0.606 | 0.520 | 1.774 ± 0.21 |
| (f) | Conical island structure, 2.0 μm | 5.877 | 0.628 | 0.500 | 1.866 ± 0.279 |