Optical and photoluminescent properties of Ag/Al2O3 nanocomposite films obtained by pulsed laser deposition

Abstract

The method of pulsed laser deposition in vacuum from forward and backward particle flows from an erosion torch was used to prepare silver films and Ag/Al 2 O 3 nanocomposite films. Measured were transmission and time-resolved photoluminescence spectra. The authors studied the influence of conditions for film formation on their optical and photoluminescent properties. For the first time, there observed was luminescence with quantum energy 1.6 eV and relaxation times up to several microseconds.

Ion Implantation for the Fabrication of Plasmonic Nanocomposites: A Brief Review

“…Estimating the wavelength variation of  1 from the optical constants given by Johnson and Christy (Johnson & Christy, 1972) for Au, Ag, and Cu, and refractive indices of common oxide matrices we can calculate the position of the SPR band for different nanocomposites, as presented in Table 1. Though the position of SRP in different nanocomposites depends also on the size and size distribution of the metal NPs, for which we must introduce size correction terms (Hövel et al, 1993) in equation 2, we can see that the tabulated SPR energies are in good agreement with the reported values for the nanocomposites fabricated by different methods (Ballesteros et al, 1997;De, 1997;Pal et al, 2000Pal et al, , 2001Vazquez-Cuchillo et al, 2001;Wang et al, 2003;García-Serrano & Pal, 2003;Barreca et al, 2004;Subramanian et al, 2004;Zeng et al, 2004;Hazra et al, 2004;Okumu et al, 2005;Ryasnyansky et al, 2005;Serna et al, 2006;Sonawane & Dongare, 2006;Mishra et al, 2008;Zheng et al, 2008;Kalidindi & Jagirdar, 2008;Kim et al, 2008;Manoilov, 2009;Jiang et al, 2009;Ma et al, 2009;Sangpour et al, 2010;Tohidi et al, 2010;Duhan et al, 2010). As the absorption coefficient depends on the volume fraction occupied by metallic NPs in the composites (eq.…”

“…Several methods have been utilized to fabricate plasmonic nanocomposites like cosputtering, ion-implantation, sol-gel, laser ablation, etc. (De, 1997;Pal et al, 2000;García-Serrano & Pal, 2003;Barreca et al, 2004;Kim et al, 2008;Manoilov, 2009). However, irrespective of the fabrication method, practical application of these materials strongly depends on parameters like the size and shape of the incorporated metal NPs, volume fraction occupied by them, homogeneity of NP distribution, and their composition.…”

Preparation of Ag‐Al₂O₃ nano structures by combustion method and investigation of photocatalytic activity

“…27 Thus, various methods have been reported to synthesize silver alumina nano-powders. These methods including co-precipitation and impregnation method, 28 hydrothermal procedure, 29 sol-gel routes, via thermal drying (II) or freeze-drying, 30 solid-state thermal decomposition, 31 pulsed laser deposition, 32 and combustion synthesis. 33 Among them, combustion synthesis has reasonable advantages compared to other methods, including inexpensive and simple equipment required, simple preparation steps and short reaction time, multiplicity of usable fuels, high purity of products due to the impurities removal, chemical homogeneity of products and above all, it is a time and energy consuming manner.…”