Multiligand Europium Complexes Incorporated Polyvinylpyrrolidone for Enhanced Solar Cell

Table 4

Spontaneous transition probabilities A_ij, branching ratios β_ij, and calculated radiative lifetimes τ_rad of ⁵D₀ in Eu(BA)(TTA)₂/PVP and Eu(BA)(TTA)₂Phen/PVP.

Samples	Transition	Energy (cm^−1)	A ij (s^−1)	β ij (%)	τ rad (μs)
Eu(BA)(TTA)2/PVP	^5 D 0 ⟶ ^7F1	16894	60.51	5.32	879.7
	^5 D 0 ⟶ ^7F2	16301	954.71	83.99
	^5 D 0 ⟶ ^7F4	14275	104.10	9.16
	^5 D 0 ⟶ ^7F6	12416	17.37	1.53
Eu(BA)(TTA)2Phen/PVP	^5 D 0 ⟶ ^7F1	16916	61.05	5.37	879.9
	^5 D 0 ⟶ ^7F2	16301	942.55	82.94
	^5 D 0 ⟶ ^7F4	14275	113.22	9.96
	^5 D 0 ⟶ ^7F6	12336	19.67	1.73