Temperature dependent photoluminescence of Copper oxide nanostructures synthesized via direct thermal oxidation

Authors

Arven I. Cafe National Institute of Physics, University of the Philippines Diliman
Horace Andrew F. Husay National Institute of Physics, University of the Philippines Diliman
Luce Vida A. Sayson National Institute of Physics, University of the Philippines Diliman
John Daniel E. Vasquez National Institute of Physics, University of the Philippines Diliman
Arnel Salvador National Institute of Physics, University of the Philippines Diliman
Elmer Estacio National Institute of Physics, University of the Philippines Diliman
Armando Somintac National Institute of Physics, University of the Philippines Diliman

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.

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Issue

2016: Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2016-2A-04

Section

Optics and Photonics

Published

2016-08-18

How to Cite

[1]

AI Cafe, HAF Husay, LVA Sayson, JDE Vasquez, A Salvador, E Estacio, and A Somintac, Temperature dependent photoluminescence of Copper oxide nanostructures synthesized via direct thermal oxidation, Proceedings of the Samahang Pisika ng Pilipinas 34, SPP-2016-2A-04 (2016). URL: https://proceedings.spp-online.org/article/view/SPP-2016-2A-04.