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. 2021 Mar 3;12:1400. doi: 10.1038/s41467-021-21721-3

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© The Author(s) 2021

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Fig. 2 — a PLE spectra of 2L CsPbBr₃ NPs monitored at FE emission (2.92 eV) and LE emission (2.58 eV). b LE ratio and asymmetric factor as a function of excitation power. c PL decay kinetics and d PL decay rate at different energies (2.38–2.86 eV).