2023
DOI: 10.1063/5.0165856
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Critical and controversial issues pertaining to the growth and properties of Cu2O in the context of energy conversion

Eleni Prountzou,
Andreas Ioannou,
Dimitrios Sapalidis
et al.

Abstract: Cu2O has been deposited on m-, r-, and a-Al2O3 by reactive sputtering of Cu using Ar with different contents of O2 followed by annealing under carefully optimized conditions at 500 °C under Ar:H2 in order to prevent the oxidation and reduction of the Cu2O layers, which have a cubic crystal structure and are bulk-relaxed. We find that the content of O2 influences the structural and optical properties of the Cu2O layers that exhibited a detailed spectral structure and distinct peaks at 2.75, 2.54, and 2.17 eV co… Show more

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