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Ultraviolet lasing and field emission characteristics of ZnO nano-rods synthesized by nano-particle-assisted pulsed-laser ablation deposition

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Abstract

We describe the lasing and the field emission characteristics of ZnO nano-rod crystals synthesized by nano-particle-assisted pulsed-laser ablation deposition, where nano-particles formed in the gas phase by the condensation of the laser-ablated species are transported on to the substrate to form nanorods. The nano-rod crystals having a hexagonal shape with a pyramidal top were synthesized on a sapphire substrate by a single-step process. The nano-rod crystals act as an efficient ultraviolet emitter showing the stimulated emission under an optical excitation and also act as field emitters with a current density of 1 mA/cm2 at an electric field strength of 16 V/μm.

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Correspondence to T. Okada.

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PACS

42.70.Hj; 85.45.Db; 81.05.Ea; 81.15.Fy

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Okada, T., Kawashima, K. & Ueda, M. Ultraviolet lasing and field emission characteristics of ZnO nano-rods synthesized by nano-particle-assisted pulsed-laser ablation deposition. Appl. Phys. A 81, 907–910 (2005). https://doi.org/10.1007/s00339-005-3315-0

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  • DOI: https://doi.org/10.1007/s00339-005-3315-0

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