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(a) PL spectra of the ZnO nanosheets and NWs at 15 K and RT and their corresponding SEM images. (b) ZnO nanosheets. (c) ZnO NWs. The inset in (a) shows the magnified image in the visible band of 15 K spectra. The dashed line represents the NWs and the solid line represents the nanosheets.
Temperature-dependent PL spectra obtained from (a) ZnO nanosheets and (b) NWs in the temperature range between 15 and 200 K.
Variations in the integrated intensity of the peaks with reciprocal temperature for the ZnO NWs and nanosheets. The fitted values are 13 meV for the NWs and 7.5 meV for the nanosheets.
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