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Using thin film deposition techniques, the researchers were able to grow high-quality cuprous oxide films at ambient pressure and room temperature.

Illuminating a cuprous oxide microcrystal excites its electrons, which join with copper ions to form regular copper atoms.

Russian physicists were growing tiny crystals of the semiconductor cuprous chloride in silicate glass and observed that the colour of the glass depended on the size of the particles1.

CUPRITE, a mineral consisting of cuprous oxide, Cu2O, crystallizing in the cubic system, and forming an important ore of copper, of which element cuprite contains 88.8%.

This cuprous oxide mostly melts and diffuses through the metallic copper, and readily parting with its oxygen to the impurities further facilitates their complete oxidation.