Abstract
We observed multi-zone light emission in a one-dimensional waveguide based on an individual pearl-like ZnO nanowire with hybrid structures, which was obtained through an electrical breakdown process. E2 (high) mode in Raman spectra revealed a blueshift while a redshift of UV near band edge emission was observed by focusing laser on the polycrystalline parts at room temperature. Strong light emission was observed from the polycrystalline parts except the end in the pearl-like ZnO nanowires as compared with columnar ones, which is associated with the light propagation in the waveguide determined by the different dielectric constants between single crystal and polycrystal.
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