Journal
JOURNAL OF LUMINESCENCE
Volume 247, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2022.118860
Keywords
Zinc oxide; Hydrothermal deposition; Photoluminescence; Cathodoluminescence; X-ray diffractometry; Raman spectroscopy
Categories
Funding
- Ministry of Education of the Republic of Belarus as a part of the Belarus Government Research Program Photonics and electronics for innovations [3.8]
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This study discusses the optical properties of ZnO films doped with Ni and Co transition metals that were hydrothermally deposited on a silicon substrate. The films have been found to have a compact crystalline structure and can be considered as nanostructured polycrystalline ZnO films doped with Ni and Co. Under optical and electronic excitation, the films exhibit luminescence in the near-band-edge ultraviolet and visible range.
The optical properties of ZnO films doped with the Ni and Co transition metals that were hydrothermally deposited on a silicon substrate are discussed. The SEM, EDX, XRD and Raman spectroscopy studies showed that the films deposited have a compact crystalline structure and can be considered as nanostructured polycrystalline ZnO films doped with Ni and Co and designated as ZnO:Ni and ZnO:Co, respectively. Under optical and elec-tronic excitation, the films demonstrated both near-band-edge ultraviolet and visible range luminescence due to crystal lattice defects. The highest intensity of the ultraviolet luminescence with a fast decay was achieved for the ZnO:Ni and ZnO:Co samples deposited in the 0.05 M solutions of Ni or Co nitrate salts. Wide luminescence spectra make the films obtained promising as luminophore or scintillating coatings for the beta-particles detection including structures integrated with silicon circuits, for example, solid state silicon-based radiation counters.
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