Field Emission From Hydrothermally Grown ZnO Nanoinjectors

Author

Wei, Ang ; Xu, Chunxiang ; Sun, X.W. ; Huang, Wei ; Lo, Guo-Qiang

Author_Institution

Nanjing Univ. of Posts & Telecommun., Nanjing

Volume

4

Issue

1

fYear

2008

fDate

3/1/2008 12:00:00 AM

Firstpage

9

Lastpage

12

Abstract

An injector-like nanostructure of ZnO fabricated by hydrothermal method was tested for field emission (FE) properties. The turn-on field of 3.8 V/mum was obtained at a current density of 0.1 muA/cm². Above the turn-on field, the emission current density quickly raised up to 1 mA/cm² at about 12.8 V/mum. The field enhancement factor beta was estimated to be 2556 and 1226 in the low and high field regions, respectively. The two-slope FE behavior was attributed to the adsorbates and defects which were introduced in the fabrication process in aqueous solution at low temperature. The good FE properties of the ZnO nanoinjectors indicate that they are applicable as low-cost and low-temperature cathode materials for FE-based devices.

Keywords

cathodes; current density; display devices; nanotechnology; zinc compounds; current density; field emission properties; field enhancement factor; hydrothermally grown nanoinjectors; low-temperature cathode materials; Display panel; ZnO; field emission (FE); hydrothermal method;

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2007.901569

Filename

4356485