Abstract
We have prepared nanosize Sn powders by spark processing. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are used to study the morphologies and sizes of these powders. Furthermore, X-ray diffraction (XRD) analyses are performed on spark processed Sn (sp-Sn) powders. Spark processed Sn powders are spherically shaped particles with diameters in the range of 3–5 nm. The photoluminescence characteristics of nanosized Sn powders are examined at various temperatures. In addition to the luminescence peak of 2.06 eV originating from SnO 2, the photoluminescence studies of sp-Sn at room temperature and low temperature reveal an additional high-energy emission band in the violet range (2.95 eV). The violet PL band exhibits a continuous blue shift and shows an increase of PL intensities with decreasing temperature. These experimental results indicate that the violet PL band of sp-Sn powders may have originated from quantum size effects.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
