Synthesis and Field Emission of ZnO Bundles with High Aspect Ratio by Solution Method

Abstract:

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ZnO nanowires with the diameters ranging from 20 to 40 nm and lengths in the range 3-5 μm were synthesized on ITO coated glass substrate by a low temperature (80 °C) solution method. The average aspect ratio (h/r) reached 150. Owing to the van der waals force the neighborly nanowires close up to form tower-like ZnO bundles. The field emission of the ZnO bundles shows a turn-on field of 7.1 V/μm at a current density of 10 μA/cm2. The threshold field is 11.3 V/μm at a current density of 10 mA/cm2. The good field emission performance is attributed to the high aspect ratio and tower-like shape.

Info:

Periodical:

Advanced Materials Research (Volumes 194-196)

Edited by:

Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang

Pages:

589-593

DOI:

10.4028/www.scientific.net/AMR.194-196.589

Citation:

J. Liu et al., "Synthesis and Field Emission of ZnO Bundles with High Aspect Ratio by Solution Method", Advanced Materials Research, Vols. 194-196, pp. 589-593, 2011

Online since:

February 2011

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Price:

$35.00

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