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Analysis of High-Current Yield of Diamond-Based Field Emitters

Published online by Cambridge University Press:  10 February 2011

Victor V. Zhimov
Affiliation:
Department of Materials Science and Eng., North Carolina State University Raleigh, NC 27695
C. Lizzul Rinne
Affiliation:
Department of Materials Science and Eng., North Carolina State University Raleigh, NC 27695
Gregory Wojak
Affiliation:
Department of Materials Science and Eng., North Carolina State University Raleigh, NC 27695
John J. Hren
Affiliation:
Department of Materials Science and Eng., North Carolina State University Raleigh, NC 27695
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Abstract

Summary:

The maximum emission currents of different diamond coatings were measured and compared quantitatively for the first time. Both the maximum current and the transconductance of field emission tips can be increased significantly by diamond coatings. A strong, nearly linear, dependence of Imax, on thickness was found. The relative effectiveness of CVD diamond, natural diamond, and nanodiamond can be characterized by values of ΔImax/ΔD and ΔVth/D. A quantitative estimate of the thermal conductivity of nanodiamond gave 2.71 W/cm K.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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References

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