Surface plasmon response of silver nanoparticles doped silica synthesised via sol-gel route


The plasmonic responses of silver nanoparticles are having attention due to their potential applications in plasmonic solar cell. We successfully synthesised silver nanoparticles in silica matrices by means of hydrolytic sol-gel method. The sol-gel derived samples were effectively annealed at 400 degrees C, 600 degrees C, 800 degrees C and studied the plasmonic response of silver nanoparticles. The temperature and doping concentration dependence of the nanoparticles and their optical and structural response were well studied. The Fourier-transform infrared spectroscopy (FTIR) confirmed the SiO2 formation. The XRD data confirmed the crystalline nature of Ag nanoparticles and the size is calculated to be 20 nm. The Transmission Electron Microscopy (TEM) measurement confirmed the crystalline planes of silver nanoparticles and the particle size is found to be around 20 nm.



subject category

Chemistry; Materials Science; Physics


Kumar, KVA; John, J; Sooraj, TR; Raj, SA; Unnikrishnan, NV; Selvaraj, NB

our authors



The author (AK) is thankful to University Grants Commission (UGC), Govt of India for supporting Minor Research Project (2365-MRP/15-16/KLMG002/UGC-SWRO) for this work. The author (AK) is also thankful to STIC, Cochin University of Science and Technology, Kochi and SPAP, Mahatma Gandhi University, Koattayam for providing the characterization facilities. NBS acknowledges FCT for financial support (SFRH/BPD/82158/2011).

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