Enhanced Field Emission Properties of Two-Dimensional ZnO Nanosheets Under UV illumination

Author

Sheng-Joue Young ; Yi-Hsing Liu

Author_Institution

Dept. of Electron. Eng., Nat. Formosa Univ., Yunlin, Taiwan

Volume

21

Issue

4

fYear

2015

fDate

July-Aug. 2015

Firstpage

427

Lastpage

430

Abstract

In this paper, ZnO nanosheets were grown on glass substrates by using an aqueous solution at room temperature. It was found that the ZnO nanosheets were structurally uniform and well oriented with the wurtzite structure. The field emission performance of ZnO nanosheets can be greatly enhanced by illuminating UV light. It was found that the turn-on electric field can be reduced from 5.9 to 5.0 V/μm and field enhancement factors (β) can be increased from 1966 to 4202. It is attributed to generate a large number of electrons by UV illumination.

Keywords

II-VI semiconductors; field emission; nanofabrication; nanostructured materials; semiconductor growth; wide band gap semiconductors; zinc compounds; UV illumination; ZnO; aqueous solution; field emission properties; field enhancement factors; glass substrates; turn-on electric field; two-dimensional ZnO nanosheets; wurtzite structure; Educational institutions; Electric fields; Glass; Lighting; Nanostructures; Substrates; Zinc oxide; Room temperature; ZnO; aqueous solution method; field emitters; nanosheet; room temperature;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2014.2372055

Filename

6963348