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Time constants of PL decays determined by the drop of emission intensity to 1/e for CH3NH3PbBr3 and CH3NH3PbI3 samples. Longer lifetimes are found in regions of high PL intensity compared to regions of low PL intensity for both hybrid lead halide perovskite types
| τ(1/e) [ns] High PL intensity region | τ(1/e) [ns] Low PL intensity region | |
|---|---|---|
| CH3NH3PbBr3 | 1.34 ± 0.02 | 0.49 ± 0.01 |
| CH3NH3PbI3 | 9.68 ± 0.07 | 3.85 ± 0.13 |
