Room temperature diluted magnetism in Li, Na and K co-doped ZnO synthesized by solution combustion method

Krithiga, R.; Lee, Sejoon; Subhashree, G.

doi:10.1016/j.spmi.2014.08.018

Cited by 27 publications

(2 citation statements)

References 53 publications

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“…Similar results have also been reported by other researchers [32,33]. Krithiga et al [34] considered that increase of optical band gap could be attributed to reduction of the interstitial Zn or grain size. Wu et al [35] thought that slight decrease of optical band gap would be due to band edge bending, which induced by Na doping.…”

Section: Resultssupporting

confidence: 89%

Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Zhao

et al. 2015

J Mater Sci: Mater Electron

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Na x Cu y Zn 1-x-y O thin films were prepared by sol-gel method on quartz glass. The effect of Na (or Cu) doping on the microstructure, surface morphology, optical properties of the thin films was investigated. The Na 0.1 Cu 0.01 Zn 0.89 O thin film has the largest average grain size and the best preferential c-axis orientation, which may be attributed to the difference in ionic radius between Zn and Na (or Cu). The Na 0.1 Cu 0.01 Zn 0.89 O thin film also presents denser morphology with little voids and the smallest optical band gap, which may be attributed to band edge bending and the larger grain size. The largest intensity of A 1 (LO) modes may be due to the major structural defect concentrations. The quenching of UV and visible emissions, which may be attributed to the increase of non-radiative recombination transition, has been observed in the Na 0.1 Cu 0.01 Zn 0.89 O and Na 0.1-Cu 0.02 Zn 0.88 O thin films.

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Section: Resultssupporting

confidence: 89%

Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Zhao

et al. 2015

J Mater Sci: Mater Electron

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“…As shown in figure 1(a), all XRD patterns are assigned to crystalline ZnO with a hexagonal crystal structure (JCPDS file No. 36-1451) [25]. In figure 1(b), the (1 0 0), (0 0 2), and (1 0 1) peaks of all the KZO samples move slightly towards a lower angle, indicating the substitution of K + partly doped into the ZnO lattice due to the fact that the radius of K + (1.51 Å) is larger than Zn 2+ (0.74 Å), causing an expansion of the lattice [13].…”

Section: Xrd Pattern Analysismentioning

confidence: 99%

Preparation of K⁺ doped ZnO nanorods with enhanced photocatalytic performance under visible light

Cheng

Jia

et al. 2019

J. Phys. D: Appl. Phys.

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Due to their ease of preparation, low cost and environmentally-friendly characteristics, zinc-type photocatalysts have attracted a lot of interest with regards to the photocatalytic degradation of organic pollutants. In this study, K+ doped ZnO (KZO) microcrystals were prepared from zinc acetate dehydrate and potassium hydroxide. X-ray diffraction analysis revealed the structure of the hexagonal wurtzite and the substitution of potassium ions in zinc oxide. A scanning electron microscope image showed the nanorod microstructure of prepared KZO crystallites. UV–visible analysis showed that the light absorption of KZO crystals expanded to the visible region and possessed a narrower band gap. In addition, the photocatalytic performance of KZO nanoparticles was evaluated. The results show that KZO possesses enhanced activity which is 3.45 times that of pure ZnO. This high performance in the photocatalytic degradation of organic pollutants can be ascribed to the band gap reduction, large surface area and improved transmission of charge carriers.

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Er3+ induced point defects in ZnO and impact of Li+/Na+/K+ on the vacancy defects in ZnO:Er studied by positron annihilation spectroscopy

et al. 2019

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Room temperature diluted magnetism in Li, Na and K co-doped ZnO synthesized by solution combustion method

Cited by 27 publications

References 53 publications

Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Preparation of K⁺ doped ZnO nanorods with enhanced photocatalytic performance under visible light

Er3+ induced point defects in ZnO and impact of Li+/Na+/K+ on the vacancy defects in ZnO:Er studied by positron annihilation spectroscopy

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Room temperature diluted magnetism in Li, Na and K co-doped ZnO synthesized by solution combustion method

Cited by 27 publications

References 53 publications

Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Preparation of K+ doped ZnO nanorods with enhanced photocatalytic performance under visible light

Er3+ induced point defects in ZnO and impact of Li+/Na+/K+ on the vacancy defects in ZnO:Er studied by positron annihilation spectroscopy

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Preparation of K⁺ doped ZnO nanorods with enhanced photocatalytic performance under visible light