Energy transfer between UO22+ and Eu3+ in β-NaYF4

Reply to Comment on “Breakdown of Crystallographic Site Symmetry in Lanthanide‐Doped NaYF4 Crystals”

“…Note that our emission pattern of b-NaYF 4 :Eu 3+ is consistent with that reported by other groups. [5] For instance, the line positions and splittings reported by Jia et al are nearly identical to our results (Figure 1). In the PL pattern, the most crucial fingerprint to corroborate the low site symmetry in NaYF 4 :Eu 3+ crystals is the appearance of the 5 D 0 !…”

Photonic Effects for Magnetic Dipole Transitions

“…I ED /I tot and I MD /I tot denote the fractions of ED and MD emission in the total integrated emission intensity for 5 D 0 − 7 F J transitions in bulk material. The NC-cavity local field factor χ NC is used and τ bulk is the 5 D 0 lifetime of Eu 3+ in bulk NaYF 4 (6.2 ms from measurements on bulk NaY 0.9 Eu 0.1 F 4 , in excellent agreement with 6.2 ms reported by Tanner 29 ). With τ bulk , the observed branching ratios and n of NaYF 4 (1.5), 30 we find for k MD 0 14.3 s −1 (very close to the theoretical value of 14.4 s −1 ) 16 and for k ED 0 75.3 s −1 .…”

Interpretation of europium(III) spectra

“…Finally, the uranyl ion (UO 2 2+ ) can sensitize Eu 3+ luminescence by energy transfer [463][464][465][466][467][468][469][470][471][472][473][474]. is a very important mechanism (see section 4.6).…”