A highly stable ScNb2VO9:Eu3+ phosphor with wide band excitation for visualization of latent fingerprints based on the powder dusting method.

• ScNb 2 VO 9 :Eu3+phosphors are firstly synthesized via solid-state reaction. • The phosphor emits bright red light excited by 324 nm. • The phosphors exhibit high stability of temperature, moisture resistance. • The level I-III features of the latent fingerprint created by scnb 2 vo 9 :Eu3+@oleyl amine can be clearly reflected. • The prepared LFPs have good ultraviolet radiation stability. A series of ScNb 2 VO 9 : x Eu3+ (x = 0.5, 1, 2, 5, 20, 30, 40, and 45 mol%) red-emitting phosphors was achieved by the high-temperature solid-state reaction. The ScNb 2 VO 9 :20 mol%Eu3+ phosphor exhibits a red emission around 618 nm (5D 0 →7F 3 transition) under 324 nm excitation. The phosphor presents the wide excitation with charge transfer band (CTB) from O2−-V5+ and O2−-Eu3+ transitions between 225 and 360 nm. The prepared ScNb 2 VO 9 :20 mol%Eu3+ phosphor shows high thermal stability, high moisture resistance stability, and high UV radiation stability. The features of the latent fingerprint (LFP) created by ScNb 2 VO 9 :Eu3+@oleylamine can be clearly reflected on different surfaces based on the powder dusting method. The experiment results demonstrate the superiority of the ScNb 2 VO 9 :Eu3+ phosphor in the field of LFP development. [Display omitted] [ABSTRACT FROM AUTHOR]