One pot synthesis of silver nanoparticles on ITO surfaces: investigation of optical and electrochemical properties

Abstract

The dense attachment of silver nanoparticles (AgNPs) on indium tin oxide (ITO) surfaces was successfully synthesized and developed using a refined seed-mediated growth approach (RSMG). AgNPs/ITO film prepared was investigated using several methods such as UV-visible spectroscopy, field emission scanning electron microscope, optical absorption, electrochemical impedance spectroscopy and cyclic voltammeter, respectively. The AgNPs was attached on the ITO surface via the cysteamine molecule. Particle size and density of AgNPs/ITO film have been examined and discussed in detail. The results obtained by refined seed-mediated growth showed a narrower size distribution and much denser attachment compared with those prepared by the normal seed-mediated growth method. The particles size of Ag nanosphere have been controlled by adjusting the growth time at less than 2h, while AgNPs of larger different shape was formed after more than 3h of growth. The bridging with cysteamine was also found to be effective for denser and homogenous attachment of AgNPs on ITO surface while keeping the dispersion. The experimental optical spectra have been explained using the full Mie theory for scattering and absorption by a homogeneous Ag sphere with modified dielectric constants taking into consideration the electron mean free path limitation.

Fabrication methods of glass fibre composites—a review

“…This process is suitable for synthetic fiber composites, but it is also started to be used for natural fiber composites, e.g. kenaf fiber [55,56], kenaf or glass fiber [57], and jute or glass fiber [58][59][60][61][62].…”

Confinement Effect of Plasmon for the Fabrication of Interconnected AuNPs through the Reduction of Diazonium Salts

“…On the other hand, bottom-up approaches, such as 3D direct laser printing [ 13 ], nanosphere lithography combined with electrochemical deposition [ 14 , 15 , 16 , 17 ] generate nanostructures [ 18 , 19 , 20 ]. These fabrication approaches allow the construction of the desired nanostructures in a range from 2 to 10 nm, which is not only crucial for the continued miniaturization of devices, but is also promising for a variety of novel applications in biosensing, catalysis [ 21 ], and optics [ 22 , 23 , 24 , 25 , 26 ].…”