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Copper oxide is any of several binary compounds composed of the elements copper and oxygen. Two oxides are well known, Cu₂O and CuO, corresponding to the minerals cuprite and tenorite, respectively. Paramelaconite (Cu₄O₃) is less well characterized.^[1]

Copper oxide may refer to:

Copper(I) oxide (cuprous oxide, Cu₂O)
Copper(II) oxide (cupric oxide, CuO)
Copper peroxide (CuO₂), a hypothetical compound
Paramelaconite (copper(I,II) oxide, Cu₄O₃)
Copper(III) oxide (Cu₂O₃) does not exist although Cu(III) is a component of cuprate superconductors
Copper(IV) oxide (CuO₂) has been proposed to exist in the gas phase^[2]

References

^ Meyer, B. K.; Polity, A.; Reppin, D.; Becker, M.; Hering, P.; Klar, P. J.; Sander, Th.; Reindl, C.; Benz, J.; Eickhoff, M.; Heiliger, C.; Heinemann, M.; Bläsing, J.; Krost, A.; Shokovets, S.; Müller, C.; Ronning, C. (2012). "Binary copper oxide semiconductors: From materials towards devices". Physica Status Solidi B. 249 (8): 1487–1509. Bibcode:2012PSSBR.249.1487M. doi:10.1002/pssb.201248128.
^ Bondybey, V. E.; English, J. H. (1984). "Structure of copper oxide (CuO₂) and its photochemistry in rare gas matrixes". J. Phys. Chem. 88 (11): 2247–2250. doi:10.1021/j150655a014.

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[1] Meyer, B. K.; Polity, A.; Reppin, D.; Becker, M.; Hering, P.; Klar, P. J.; Sander, Th.; Reindl, C.; Benz, J.; Eickhoff, M.; Heiliger, C.; Heinemann, M.; Bläsing, J.; Krost, A.; Shokovets, S.; Müller, C.; Ronning, C. (2012). "Binary copper oxide semiconductors: From materials towards devices". Physica Status Solidi B. 249 (8): 1487–1509. Bibcode:2012PSSBR.249.1487M. doi:10.1002/pssb.201248128.

[2] Bondybey, V. E.; English, J. H. (1984). "Structure of copper oxide (CuO₂) and its photochemistry in rare gas matrixes". J. Phys. Chem. 88 (11): 2247–2250. doi:10.1021/j150655a014.

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