Table 2 Crystallite and pore sizes and direct and indirect band gap values for mesoporous TiO2 films prepared with pastes A127 to A210 and subsequently treated thermally at 530 °C in air
From: Effect of Anatase Synthesis on the Performance of Dye-Sensitized Solar Cells
Sample | Synthesis temperature in the autoclave (°C) | XRD crystallite size d (nm) | FE-SEM pore size (nm) | Direct band gap Egdir (eV) | Indirect band gap Egind (eV) |
|---|---|---|---|---|---|
A127 | 127 | 10.8 | 23.964 ± 2.55 | 3.69 | 3.52 |
A148 | 148 | 11 | 26.36 ± 6.41 | 3.48 | 3.40 |
A167 | 167 | 11.8 | 25.04 ± 3.41 | 3.45 | 3.34 |
A182 | 182 | 12.3 | 21.354 ± 3.00 | 3.44 | 3.34 |
A200 | 200 | 12.4 | 23.116 ± 4.23 | 3.44 | 3.34 |
A210 | 210 | 14.1 | 21.407 ± 2.29 | 3.44 | 3.34 |