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| Water droplet | |||||
|---|---|---|---|---|---|
| |||||
| Substrate | Control sample | 2 | 4 | 7 | 11 |
| ITO | 31° | 23° | 25° | 23° | 45° |
| TiO2 | Total wetting | 9° | 5° | 3° | 18° |
| Sb2Se3 | 58° | 16° | 13° | 17° | 33° |
| Sb2S3 | 24° | 18° | 26° | 17° | 45° |
| Perovskite precursor droplet | |||||
| |||||
| ITO | Total wetting | Total wetting | Total wetting | Total wetting | Total wetting |
