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- W2034749431 abstract "Abstract Zn 1− x Cu x O thin films ( x =0, 1.0, 3.0, 5.0%) are prepared on quartz substrate by sol–gel method. The structure and morphology of the samples are investigated by X-ray diffraction (XRD) and atomic force microscopy (AFM). The results show that Cu ions were effectively penetrated into the ZnO crystal lattices with substitutional and interstitial impurities to form stable solid solutions without changing the polycrystalline wurtzite structure. Two peaks at 420 nm (2.95 eV, violet), 485 nm (2.56 eV, blue) have been observed from the photoluminescence (PL) spectra of the samples. It is concluded that the violet peak may correspond to the exciton emission; the blue emission corresponds to the electron transition from the bottom of the conduction band to the acceptor level of zinc vacancy. The optical test shows that the optical band gap E g is decreased with the increase amount of Cu doping in ZnO. The band gap decrease from 3.40 eV to 3.25 eV gradually. It is also found that the transmission rate is increased rapidly with the increase of Cu ions concentration." @default.
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- W2034749431 date "2012-06-01" @default.
- W2034749431 modified "2023-10-17" @default.
- W2034749431 title "Study on the structure and optical property of Zn1−xCuxO sol–gel thin films on quartz substrate" @default.
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- W2034749431 doi "https://doi.org/10.1016/j.physb.2012.03.009" @default.
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