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Statistical table of MAPbI3 single crystal surface potential before and after MAI treatment by using Au and Cu as reference electrodes.
| SC-Au (meV) | MAI/SC-Au (meV) | SC-Cu (meV) | MAI/SC-Cu (meV) | |
|---|---|---|---|---|
| 250 | 150 | 420 | 290 | |
| 200 | 125 | 430 | 325 | |
| 150 | 75 | 400 | 275 | |
| 200 | 100 | 450 | 300 | |
| 200 | 125 | 415 | 315 | |
| Average | 200 | 115 | 423 | 301 |
| Standard deviation | 33.35 | 28.50 | 18.57 | 19.81 |
