Table 1. Film Thickness of Prepared CuO Samples Consisting of Different Film Layers.
| sample | film thickness (nm) |
|---|---|
| CuO-2L | 142 ± 15 |
| CuO-4L | 264 ± 28 |
| CuO-6L | 419 ± 37 |
| CuO-8L | 543 ± 52 |
| CuO-10L | 690 ± 33 |
| CuO-6L-2S | 232 ± 36 |
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