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Fig. 1 | Nanoscale Research Letters

Fig. 1

From: Ag-Decorated Localized Surface Plasmon-Enhanced Ultraviolet Electroluminescence from ZnO Quantum Dot-Based/GaN Heterojunction Diodes by Optimizing MgO Interlayer Thickness

Fig. 1

a SEM image of the Ag-NPs spin-coated onto the MgO/p-GaN/sapphire film. b The extinction spectrum of Ag-NPs and the PL spectrum of ZnO QD film. c TEM image of the as-prepared ZnO QDs. The inset shows the typical HRTEM image. d PL spectra of bare ZnO film, Ag/ZnO film, and MgO/Ag-NP/ZnO composite films with various MgO interlayer thicknesses. The inset shows the variation of UV enhancement ration with the MgO interlayer thickness

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