A Stable Field-Emission Light Source With ZnO Nanoemitters

Author

Wei, Lei ; Zhang, Xiaobing ; Wang, Baoping ; Lou, Chaogang ; Zhu, Zuoya ; Zhao, Zhiwei ; Chi, Li ; Kai, Hou

Author_Institution

Southeast Univ., Nanjing

Volume

29

Issue

5

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

452

Lastpage

455

Abstract

A field-emission cathode is fabricated with ZnO tetrapodlike nanoemitters. With a simple planar triode structure, a cathodoluminescent light source has been investigated. Because of the characteristics of surface-conduction electron-emission planar triode, this cathodoluminescent light source shows a very good performance. As experimental results show, the turn-on electric field is about 1 V/mum, whereas the current density is 1 muA/cm². The threshold electric field is 1.6 V/mum, whereas the current density is 1 mA/cm². When a pulse voltage with 4% duty cycle is applied on the gate electrode, the fluctuation of anode current is smaller than 15 % during 200 h.

Keywords

cathodoluminescence; current density; field emission displays; light sources; nanostructured materials; zinc compounds; anode current; cathodoluminescent light source; current density; field-emission cathode; planar triode structure; pulse voltage; stable field-emission light source; surface-conduction electron-emission planar triode; tetrapodlike nanoemitters; threshold electric field; Anodes; Diodes; Displays; Electrodes; Furnaces; Lamps; Light sources; Nanostructures; Pulse amplifiers; Zinc oxide; Field-emission light source; ZnO tetrapodlike emitter; planar triode;

fLanguage

English

Journal_Title

Electron Device Letters, IEEE

Publisher

ieee

ISSN

0741-3106

Type

jour

DOI

10.1109/LED.2008.920465

Filename

4494638