Table 4
Epitaxy strategy and 2D material selection based on different factors
| Method | Substrate type | 2D material layer number | Applications |
| Remote epitaxy | Crystal (strong polarity) | 1–2 | High-quality epilayers and flexible devices |
| Pinhole epitaxy | Crystal (weak polarity) | 1–2 | High-quality epilayers |
| Van der Waals epitaxy | Crystal and amorphous | ≥3 | Flexible devices |
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