Develop Synthesis and Characterization of Dual-Faced Porous Silicon/Gold Nanoparticle Hybrid Structures

In this study, dual-face porous silicon layers (Df-PSi) and hybrid structures with (AuNPs/PSi/Si / PSi /AuNPs) configurations are fabricated and investigated. The Df-Psi layers were synthesized simultaneously using the dual beam laser supporting etching (DB-LSE) route, which employed two identical laser beams. The Df-PSi layers hybrid structures were produced by integrating Au-NPs into PSi in an HAuCl4 solution using a dipping technique. The results showed well-ordered, highly symmetrical Df-PSi and hybrid structures with minute variations in overall characteristics due to a small change in the absorption laser intensity during the etching process. Following the Df-PSi synthesis, hotspot vacancies among nanoparticles in hybrid structures and the size distribution, and specific surface area (SSA) of gold nanoparticles (AuNPs) showed a well-ordered realization.