Table 4. Atomic Concentration (at. %) of the MAPbI3 Thin Film.
| details | Pb | I | N | C | I/Pb |
|---|---|---|---|---|---|
| not exposed to air, MAPbI3 | 13.2 | 36.1 | 12.2 | 38.5 | 2.73 |
| exposed to air, MAPbI3 | 25.3 | 37.6 | 4.4 | 32.7 | 1.48 |
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