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- W2080350055 abstract "Cobalt doped zinc oxide nanorods Zn1−xCoxO (x = 0.01, 0.10) have been synthesized by a hydrothermal process with Zn(NO3)2, Co(NO3)2, NH4OH, CO(NH2)2 and C2H5OH at 150 °C for 1 h. X-ray diffraction and scanning electron microscopy were used to characterize the crystalline structure, size and morphology of the samples. The photoluminescence (PL) and the PL excitation spectra of the nanorods were measured in the range of temperature from 15 K to room temperature. The PL spectra at low temperatures exhibit a group of ultraviolet narrow lines in the near-band-edge region of 3.0–3.4 eV and a very broad band peaked at 3.20 eV. The origin of the near-band-edge PL is interpreted as an emission from free excitons, neutral donor-bound excitons, radiative transitions from a donor to the valence band and donor–acceptor pairs. In particular, a group of emission lines in the red region of 1.8–1.9 eV have been revealed. These emission lines were assigned to the radiative transitions within the tetrahedral Co2+ ions in the ZnO host crystal." @default.
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- W2080350055 date "2009-02-26" @default.
- W2080350055 modified "2023-10-16" @default.
- W2080350055 title "Photoluminescence properties of Co-doped ZnO nanorods synthesized by hydrothermal method" @default.
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