Open AccessEffect of surface type on structural and optical properties of Ag nanoparticles formed by dewetting
Author(s) -
İrem Tanyeli,
Hisham Nasser,
Fırat Es,
Alpan Bek,
Raşit Turan
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.00a798
Subject(s) - dewetting , materials science , nanoparticle , substrate (aquarium) , surface roughness , optics , light scattering , scattering , surface finish , nanotechnology , microlens , thermal conductivity , optoelectronics , thin film , composite material , lens (geology) , oceanography , physics , geology
Integration of an array of Ag nanoparticles in solar cells is expected to increase light trapping through field enhancement and plasmonic scattering. Requirement of Ag nanoparticle decoration of cell surfaces or interfaces at the macro-scale, calls for a self-organized fabrication method such as thermal dewetting. Optical properties of a 2D array of Ag nanoparticles are known to be very sensitive to their shape and size. We show that these parameters depend on the type of the substrate used. We observe that the average nanoparticle size decreases with increasing substrate thermal conductivity and nanoparticle size distribution broadens with increasing surface roughness.