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Results of the XPS and the water CA studies of as-prepared TiO2 thin films deposited onto window glass at different temperatures.
| XPS study of as-prepared samples |
CA value |
||||||
|---|---|---|---|---|---|---|---|
| deposition temperature (°C) | Na (at%) | C (at%) | [Vo]/[Ti–O] (at%) | [OH]/[Ti–O] (at%) | as-prepared | UV treatment (30 min) | aged (three months) |
| 250 | 13.0 | 18.3 | 0.10 | 0.06 | ∼33° 
|
∼ 7° 
|
∼ 17° 
|
| 350 | 10.0 | 6.3 | 0.23 | 0.18 | ∼7° 
|
∼0° 
|
∼ 10° 
|
| 450 | 11.0 | 9.8 | 0.13 | 0.13 | ∼6° 
|
∼0° 
|
∼18° 
|
