Gold nanoparticle growth control - Implementing novel wet chemistry method on silicon substrate

Ammar Al-Ameer, Habib Katsiev, Lutfan Sinatra, Irshad Hussein, Osman Bakr

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Controlling particle size, shape, nucleation, and self-assembly on surfaces are some of the main challenges facing electronic device fabrication. In this work, growth of gold nanoparticles over a wide range of sizes was investigated by using a novel wet chemical method, where potassium iodide is used as the reducing solution and gold chloride as the metal precursor, on silicon substrates. Four parameters were studied: soaking time, solution temperature, concentration of the solution of gold chloride, and surface pre-treatment of the substrate. Synthesized nanoparticles were then characterized using scanning electron microscopy (SEM). The precise control of the location and order of the grown gold overlayer was achieved by using focused ion beam (FIB) patterning of a silicon surface, pre-treated with potassium iodide. By varying the soaking time and temperature, different particle sizes and shapes were obtained. Flat geometrical shapes and spherical shapes were observed. We believe, that the method described in this work is potentially a straightforward and efficient way to fabricate gold contacts for microelectronics. © 2013 IEEE.
Original languageEnglish (US)
Title of host publication2013 Saudi International Electronics, Communications and Photonics Conference
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Print)9781467361958
DOIs
StatePublished - Apr 2013

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