Sonochemical Synthesis and Properties of YVO₄:Eu³⁺ Nanocrystals for Luminescent Security Ink Applications

Table 1

⁵D₀ ⟶ ⁷F₂/⁵D₀ ⟶ ⁷F₁ relative emission intensity ratio.

Sample	^5D0 ⟶ ^7F2/^5D0 ⟶ ^7F1
300°C-1 h	8.80
600°C-1 h	5.58
900°C-1 h	5.26
900°C-2 h	6.38
900°C-3 h	5.97
900°C-4 h	5.71
900°C-5 h	5.87