Fabrication of Copper‐Graphite Composites by Spark Plasma Sintering and Its Characterization

Allabergenov, Bunyod; Tursunkulov, Oybek; Jo, Soo Jeong; Abidov, Amir; Gómez, Clarisa Villegas; Park, Sung Bum; Kim, Sungjin

doi:10.1002/9781118486955.ch13

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“…Recent papers have reported on microstructure and different properties of CZO materials, such as electrical, piezooptical effects, optical and photosensitivity properties et al Structural and optical properties of ZnO films with heavy Cu-doping prepared by MS which were reported by Y. Liu et al [16]. B. Allabergenov et al [17] reported microstructural analysis and optical characteristics of CZO films. K. Joshi et al [18] reported band gap widening and narrowing in CZO films.…”

Section: Introduction mentioning

confidence: 99%

Influence of Argon/oxygen Ratio on Linear and Nonlinear Optical Properties of Copper Doped ZnO Films

Wen¹,

Han²,

Yao³

et al. 2019

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Copper (Cu)-doped ZnO (CZO) films were grown by simultaneous direct current and radio frequency magnetron sputtering technique under the situation of different gas flow rates of Ar: O2 (1:1, 2:1 and 1:0). The X-ray diffraction patterns revealed the naturally polycrystalline ZnO films with the predominant reflection (002) peak, which referred to the hexagonal wurtzite structure toward c-axis. The elemental composition of thin films was analyzed by energy dispersive spectroscopy (EDS). The Cu concentrations in thin films increased with Ar ratio of up to 1:0. The EDS spectra of three kinds of elements indicate that Cu-doping has obvious and sophisticated effect on the chemical state of oxygen, but less effect on those of copper and zinc. Furthermore, the nonlinear absorption of CZO films was investigated by the way of Z-scan technique. These films demonstrated good nonlinear absorption behavior for the different gas flow rates of Ar: O2.

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Section: Introduction mentioning

confidence: 99%