Improved field emission properties of CdS deposited single walled carbon nanotube emitter

Lee, Jungwoo; Lee, Wonjoo; Park, Taehee; Lee, Jaeseung; Park, Eunkyung; Lee, Donghwan; Lee, Jongtaek; Yi, Whikun

doi:doi:10.1116/1.3360900

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Journal of Vacuum Science & Technology B / Volume 28 / Issue 2 / PAPERS FROM THE 22nd INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE / Materials

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J. Vac. Sci. Technol. B 28, C2B43 (2010); http://dx.doi.org/10.1116/1.3360900 (4 pages)

Improved field emission properties of CdS deposited single walled carbon nanotube emitter

Jungwoo Lee, Wonjoo Lee, Taehee Park, Jaeseung Lee, Eunkyung Park, Donghwan Lee, Jongtaek Lee, and Whikun Yi

Department of Chemistry, Hanyang University, Haengdang-dong 17, Seoul 133-791, Korea

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(Published online 31 March 2010)

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A film of shaped CdS nanoparticle deposited single walled carbon nanotubes (CdS-SCWNTs) on silicon wafer is successfully fabricated by the method of layer-by-layer deposition cycle. The field emission (FE) properties of CdS-SWCNTs film are investigated for the first time. The film of CdS-SWCNTs exhibits better FE properties, a lower turn-on field, and a higher field enhancement factor than that of the film of pristine SWCNTs, for which the physical and chemical properties of the CdS nanoparticle have played an important role. As a II-VI semiconductor compound, CdS has attracted considerable interest in optoelectronic application because of its relatively low electron affinity, high chemical inertness, and sputter resistance.

ACKNOWLEDGMENTS

This work was supported by the Korean Science and Engineering Foundation (Grant No. KRF-2009-007-2914) and the Research fund of the Hanyang University (Grant No. HYU-2008-T). J.L. wishes to thank Brain Korea 21 for the award of financial support.

Article Outline

INTRODUCTION
EXPERIMENT
RESULT AND DISCUSSION
CONCLUSION

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KEYWORDS and PACS

Keywords

cadmium compounds, carbon nanotubes, field emission, II-VI semiconductors, nanoparticles, semiconductor thin films, cadmium sulfide, single walled carbon nanotube, cadmium nitrite, sodium sulfide

PACS

79.70.+q

Field emission, ionization, evaporation, and desorption
85.45.Db

Field emitters and arrays, cold electron emitters
81.07.Bc

Nanocrystalline materials
81.05.Dz

II-VI semiconductors
68.65.-k

Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties

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History

Received 7 October 2009
Accepted 16 February 2010
Published online 31 March 2010

Digital Object Identifier

http://dx.doi.org/10.1116/1.3360900

PUBLICATION DATA

ISSN

1071-1023 (print)

1520-8567 (online)

Publisher

American Vacuum Society

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