Enhanced field emission from hexagonal rhodium nanostructures

Journal Article · Mon Jun 23 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2943657· OSTI ID:21120866

Sathe, Bhaskar R; Kakade, Bhalchandra A; Mulla, Imtiaz S; Pillai, Vijayamohanan K ^[1]; Late, Dattatray J; More, Mahendra A; Joag, Dilip S ^[2]

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1. Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008 (India)
2. Department of Physics, University of Pune, Pune 411 007 (India)

Shape selective synthesis of nanostructured Rh hexagons has been demonstrated with the help of a modified chemical vapor deposition using rhodium acetate. An ultralow threshold field of 0.72 V/{mu}m is observed to generate a field emission current density of 4x10{sup -3} {mu}A/cm{sup 2}. The high enhancement factor (9325) indicates that the origin of electron emission is from nanostructured features. The smaller size of emitting area, excellent current density, and stability over a period of more than 3 h are promising characteristics for the development of electron sources.

• OSTI ID: 21120866
• Journal Information: Applied Physics Letters, Vol. 92, Issue 25; Other Information: DOI: 10.1063/1.2943657; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACETATES
CHEMICAL VAPOR DEPOSITION
CRYSTAL GROWTH
CURRENT DENSITY
ELECTRON EMISSION
ELECTRON SOURCES
FIELD EMISSION
MOLECULAR BEAM EPITAXY
NANOSTRUCTURES
RHODIUM