Abstract
Visible photoluminescence (PL) at room temperature from silicon nanowires (Si NWs) prepared by using the metal-assisted chemical-etching (MACE) technique is reported. The morphology and the luminescence properties of Si NWs are characterized by using scanning electron microscopy (SEM), high resolution transmission electron microscopy (HR-TEM), and luminescence spectroscopy. TEM images of the luminescent Si NWs reveal that the surfaces of the Si NWs are very rough, with a few nano-sized silicon particles being attached to the Si NWs. Luminescent Si NWs are optically characterized by PL and Raman measurements. Temperature-dependent PL measurements are measured at temperatures from 5 K to room temperature to determine the origin of the PL. The PL intensity decreases and the wavelength of the PL is blue-shifted as the temperature is increased. The Raman spectra of luminescent Si NWs reveal quantum confinement of the Si NWs.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.