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A Schottky type light-emitting diode of ZnO nanowire was fabricated based on the principle of luminescence of Schottky barrier heterojunction. Driven by a voltage of above 6 V, an EL spectrum was obtained. The spectrum consisted of two peaks: one is centered at a wavelength of the ultraviolet 392nm, and the other at the visible 525nm. The mechanism of electroluminescence of this device was analyzed according to the rectifying I-V curve and the energy band structure.
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Keywords:
- ZnO nanowire /
- Schottky type diode /
- electroluminescence
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