Zhongpeng Zhang

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ZnS:Er quantum dots were prepared in aqueous medium from readily available precursors. The construction, morphology and luminescence properties of the ZnS:Er quantum dots were evaluated by X-ray diffraction (XRD), transmission electron microscopy (TEM), and photoluminescence spectra. The average particle size was calculated using the Scherrer formula to be(More)
Si4+ and Al3+ doped BaZr(BO3)2:Eu phosphors were prepared by solidstate reaction. BaZr(BO3)2:Eu3+, BaZr(BO3)2:Eu3+, Si4+ and BaZr(BO3)2:Eu3+, Al3+ were characterized by X-ray diffraction spectra (XRD) and photoluminescence spectra. After codoped with Si or Al, the charge-transfer state (CTS) band of Eu3+-O(2-) shows blue shift accompanied by increasing(More)
Multiple input multiple outputs-orthogonal frequency division multiplexing (MIMO-OFDM) is the key procedure for era correspondences frameworks. In this paper, a few identification calculations dependent upon MIMO-OFDM frameworks are quickly presented. Different input–multiple-yield frameworks give an extremely swearing up and down to means to build the(More)
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