Table 2. Chemical Compositions of Different Perovskite Systems (Named HP1, HP2, and HP3) with 0.05 < x < 0.3 and 0.2 < y < 1.0.
| sample name | chemical composition |
|---|---|
| HP1 | Cs0.50FAI0.50PbI3 |
| HP2 | CsxFAI1–xPbI3 |
| HP3 | CsxFAI1–xPbI3–yBry |
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