Heat treatment | Thickness (nm) | n0 | A (μm2) | B (107 μm4) | |||
ITO | FTO | ITO | FTO | ITO | FTO | ||
Before annealing | 300 | 2.41 | 2.12 | −0.096 | −0.542 | 0.12 | 3.39 |
500 | 2.52 | 2.26 | −0.153 | −0.743 | 1.42 | 6.69 | |
600 | 2.56 | 2.32 | −0.043 | −0.268 | 0.68 | 2.57 | |
Annealing at 300˚C | 300 | 2.38 | 1.83 | −0.070 | −0.386 | 0.71 | 3.09 |
500 | 2.59 | 1.93 | −0.160 | −0.280 | 1.91 | 1.72 | |
600 | 2.62 | 2.03 | −0.256 | −0.596 | 2.04 | 4.35 | |
Annealing at 400˚C | 300 | 1.94 | 1.79 | −0.163 | −0.245 | 1.89 | 1.89 |
500 | 3.02 | 1.95 | −0.199 | −0.396 | 1.60 | 3.84 | |
600 | 2.43 | 2.30 | −0.042 | −0.018 | 0.49 | 3.34 |