Open AccessCharacterization of Silver Nanoparticles on Porous silicon by Laser ablation in Liquid
Author(s) -
Mohammed Ibrahim Ismael,
Ghazwan Ghazi Ali,
Uday M. Nayef
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1126/1/012006
Subject(s) - porous silicon , materials science , laser ablation , silicon , scanning electron microscope , etching (microfabrication) , nanoparticle , laser , laser ablation synthesis in solution , silver nanoparticle , absorption (acoustics) , homogeneity (statistics) , nanostructure , chemical engineering , porosity , nanotechnology , analytical chemistry (journal) , optoelectronics , layer (electronics) , composite material , optics , laser power scaling , chemistry , x ray laser , chromatography , physics , engineering , statistics , mathematics
In this article, Porous silicon was prepared using a photo-electrochemical etching method of n-type silicon at etching times (5 and 15 min.). The silver nanoparticles were coated on porous silicon by laser ablation in liquid with energy 400, 600, and 800 mJ. Atomic force microscope images showed an increase of pores size with etching time and it becomes smaller in diameter after laser ablation. Moreover, Scanning electron microscope displayed an aggregates formation when increasing laser energy. The strong peak of absorption of AgNPs found around 415-420 nm. The absorption amplitude increased when laser energy increases. Therefore, the nanostructures on the porous silicon properties play a crucial role in the formation of the homogeneity and this improves the structural stability of PSi layer.