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We investigate the surface plasmon resonances (SPRs) behavior of silver niobate (AgNbO3) experimentally and theoretically. Result shows that the localized SPRs (LSPRs) of AgNbO3 combining with its interband transitions enlarge the absorption band across the whole ultravioletvisible range. The LSPRs behavior in visible-light is mainly ascribed to the metal-like state of silver ion and self-assembled microstructures of AgNbO3 microcrystal. The ab initio density functional theory calculations are carried out to obtain the further insight of the SPRs behaviors. Theoretical study indicates that the Ag atoms are weakly bound in the perovskite structure, leading to a metal-like state, which was the key factor to SPRs behavior of AgNbO3. [ABSTRACT FROM AUTHOR]

We investigate the surface plasmon resonances (SPRs) behavior of silver niobate (AgNbO3) experimentally and theoretically. Result shows that the localized SPRs (LSPRs) of AgNbO3 combining with its interband transitions enlarge the absorption band across the whole ultravioletvisible range. The LSPRs behavior in visible-light is mainly ascribed to the metal-like state of silver ion and self-assembled microstructures of AgNbO3 microcrystal. The ab initio density functional theory calculations are carried out to obtain the further insight of the SPRs behaviors. Theoretical study indicates that the Ag atoms are weakly bound in the perovskite structure, leading to a metal-like state, which was the key factor to SPRs behavior of AgNbO3. [ABSTRACT FROM AUTHOR]