Large photoluminescence enhancement in mechanical-exfoliated one-dimensional ZnO nanorods
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Herein, we presented the low-dimensional mechanical-exfoliated growth of hexagonal ZnO nanorods. The structural, morphological and optical properties have been investigated. The hexagonal wurtzite structure has been confirmed via X-ray diffraction graphs showing the (002) preferred orientation. The rod-like hexagonal structure has been revealed in the Field-emission Scanning electron microscopy (FE-SEM) and High-resolution Transmission Electron Microscopy (HR-TEM) analysis. Threefold enhancement in near-band-edge (NBE) emission of photoluminescence spectra has been achieved in low-dimensional ZnO nanorods (NRs) without any doping. This paves new ways for low-dimensional semiconductors in order to fabricate high-efficient luminescence devices.
This work was carried out with the financial support of the National Natural Science Foundation of China projects no. (NSFC Project No. 11674018, 11504012) and China scholarship council.
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There are no conflicts to declare.
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