Widening UV–Vis absorption band by Cu doped ZnO and ZnO/CuO composite

ZnO, Cu doped ZnO, and CuO were synthesized by solvothermal method. Pure ZnO and CuO show two-dimensional (2D) particles with flake-like shape morphology and well-defined crystalline phases. The Cu incorporation slightly modifies the ZnO particle shape and size for low dopant. However, ZnO/CuO compo...

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Bibliographic Details
Published in:Materials letters 2021-05, Vol.291, p.1
Main Authors: Morales-Mendoza, JE, Paraguay-Delgado, F
Format: Article
Language:English
Subjects:
Absorption spectra
Copper
Copper oxides
Electromagnetic absorption
Flakes
Materials science
Morphology
Particle shape
Zinc oxide
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Summary:ZnO, Cu doped ZnO, and CuO were synthesized by solvothermal method. Pure ZnO and CuO show two-dimensional (2D) particles with flake-like shape morphology and well-defined crystalline phases. The Cu incorporation slightly modifies the ZnO particle shape and size for low dopant. However, ZnO/CuO composite presents the co-existing morphologies with flake-like and small-rods shapes. The visible‐light absorption increases, directly proportional to the Cu content. However, ZnO/CuO composite shows wide ultraviolet–visible absorption between 200 and 1000 nm. The bandgap energy determined was 3.22 and 1.45 eV for ZnO and CuO, respectively.
ISSN:0167-577X
1873-4979