Temperature dependent photoluminescence of Copper oxide nanostructures synthesized via direct thermal oxidation
Abstract
We investigated the low temperature photoluminescence of mixed-phase Copper oxide nanostructures such as nanocrystals and nanowires. Existence of cuprous and cupric phase was verified under XRD for both samples prepared via direct thermal oxidation. Substrate temperature was varied from 11K to 300K during the photoluminescence spectroscopy to define the mechanism of emission. Characteristic peaks for Cu2O-phase located at 2.14eV and 1.95eV was found for both samples. The identified peaks for both samples are attributed to the defect states of cuprous crystal with activation energies ranging from ~6-10meV based from Arrhenius plot.
Downloads
Issue
Physics at the front and center: Strengthening core values in physics research
18–21 August 2016, University of the Philippines Visayas, Iloilo City
SPP2016 Conference Organizers
SPP2016 Editorial Board
SPP2016 Partners and Sponsors