Correction to "Striking Change in Radiative Lifetime and Asymmetry Ratio with Temperature for the Double Perovskite Cs 2 NaEuCl 6"

Adv. Opt. Mater. 2024, 12, 2302261 DOI: 10.1002/adom.202302261 In the “2.2. Quenching of ⁵D₀ Emission” section, the text “The thermal quenching of lifetime may be due to the promotion of electrons over an energy gap ∆E to a trap state. This change in reciprocal lifetime (1/τ = k) with temperature may be modeled by: 6 (Formula presented.) as in Figure 3b. The derived parameters are τ_R = 11.0 ± 0.7 ms and ∆E = 153 ± 29 cm⁻¹.” was incorrect. This should be “The change in lifetime is entirely due to the change in vibronic intensity, i.e., to the increased radiative rate. For simplicity, assuming a near unit quantum yield, the reciprocal lifetime (s⁻¹) can be written as a function of temperature: 6 (Formula presented.) where the first term represents the constant magnetic dipole intensity mechanism contribution and the second term represents the change in vibronic intensity with temperature. The refractive index, n, of Cs₂NaEuCl₆ near 590 nm is 1.5918, so the first term is 59.1 s⁻¹; and the phonon energy ℏω has been fitted in the manuscript from the (⁵D₀ → ⁷F₂)/(⁵D₀ → ⁷F₁) intensity ratio to be 72 cm⁻¹. The Boltzmann constant, k, is 0.695 cm⁻¹ K⁻¹. The plot shows the fit to experimental data of reciprocal lifetime versus temperature, using one variable parameter A (fitted as 31.4 ± 0.7) using Equation (6), as shown in Figure 3b.” We need to use the following figure to replace Figure 3b in the manuscript as the new Figure 3b. We apologize for this error.