Effect of CsI nanoparticle coating on field emission properties from a composite of CNT and ZnO nanotetrapods

Author

Xiaofei Hao ; Zhuoya Zhu ; Wei Lei ; Guifu Ruan

Author_Institution

Sch. of Electron. Sci. & Eng., Southeast Univ., Nanjing, China

fYear

2010

fDate

14-16 Oct. 2010

Firstpage

413

Lastpage

414

Abstract

In this study, we fabricated a cathode using screen printing method with carbon nanotubes and ZnO nanotetrapods as cathode emission materials and CsI nanoparticles as coating materials. After several comparative experiments, we find that 3g CsI dispersed into an organic paste which is composed of 20ml terpineol and 1g ethyl cellulose has significant results to improve the performance of the field emission. The turn-on voltage of the composite cathode decreased from 2.7 V/μm to 2.2 V/μm for the CsI coated cathode with above CsI concentration. Fig.1 gives the curve of I-E characteristics with cathode coated by CsI and not be coated respectively.

Keywords

II-VI semiconductors; caesium compounds; carbon nanotubes; cathodes; electron field emission; nanocomposites; nanofabrication; nanoparticles; vacuum microelectronics; wide band gap semiconductors; zinc compounds; C-ZnO; CsI; CsI coated cathode; CsI concentration; CsI nanoparticle coating; I-E characteristics; ZnO nanotetrapods; carbon nanotubes; composite cathode; ethyl cellulose; field emission properties; organic paste; screen printing method; terpineol; turn-on voltage; Carbon; Coatings; Educational institutions; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electron Sources Conference and Nanocarbon (IVESC), 2010 8th International

Conference_Location

Nanjing

Print_ISBN

978-1-4244-6645-0

Type

conf

DOI

10.1109/IVESC.2010.5644306

Filename

5644306