Synthesis of Optoelectronic Nanostructures on Silicon and Gold-Coated Silicon via High-Intensity Laser Pulses at Varied Pulse Durations

This work defines the generation of nanostructures on silicon and gold-coated substrates by tuning pulse duration our proposed method: ultra-short laser pulses for in situ nanostructure (ULPING) under ambient conditions. The method is a single-step novel which efficient synthesizing substrates. We observed higher nanofiber at shorter using Scanning Electron Microscopy (SEM) imaging. Silicon oxide formation was confirmed Energy-dispersive X-ray spectroscopy (EDX) photoelectron (XPS) analysis band gap 8.19 eV achieved Si + Au sample, determined Reflection Energy Loss Spectroscopy (REELS) spectra. A high valence offset 4.93 measured silicon-based samples Si/SiO2 interface. addition gold nanoparticles decreased we blue shift optical conductivity with nanofibers spectroscopy.