Enhanced Field Emission From The Gold- Polyaniline (Au-PANI) Nanocomposite

Journal Article · Tue Nov 30 23:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3530522· OSTI ID:21509965

Patil, Sandip S; More, Mahendra A ^[1]; Koiry, Shankar P; Aswal, D K ^[2]

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1. Center for Advanced Studies in Materials Science and Condensed Matter Physics, Department of Physics, University of Pune, Pune-41007 (India)
2. Technical Physics and Prototype Engineering Division, BARC, Mumbai 400085 (India)

The gold-polyaniline nanocomposite was synthesized by electrochemical route in two steps. In the first step polyaniline film was deposited by cyclic voltammetry on the ITO coated glass substrate, and then synthesis of gold-polyaniline nanocomposite via chronoamperometry. The synthesized gold-polyaniline nanocomposite film was characterized using scanning electron microscope (SEM), X-ray diffraction (XRD), Ultra-violet spectroscopy (UV-vis) and Fourier Transform Infrared Spectrometry (FTIR). The SEM analysis shows well adherent gold nanoparticles on the surface of polyaniline nanofibers. The XRD and UV-Vis spectra indicate formation of gold nanoparticles. From the field emission studies, the value of the turn on field, corresponding to 1 nA emission current, is found to be 0.65 V/{mu}m and emission current density of 1 {mu}A/cm{sup 2} has been drawn at an applied field of 1.1 V/{mu}m. These values are observed to be superior than the reported ones. The field emission current stability investigated at 1 {mu}A over duration of more than four hours is found to be good. The observed field emission characteristics suggest the gold polyaniline nanocomposite as promising material for field emission based applications.

• OSTI ID: 21509965
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1313; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
AMPEROMETRY
CHEMICAL ANALYSIS
CHEMISTRY
COHERENT SCATTERING
CURRENT DENSITY
DIFFRACTION
ELECTROCHEMISTRY
ELECTRON MICROSCOPY
ELEMENTS
EMISSION
FIELD EMISSION
FILMS
FOURIER TRANSFORM SPECTROMETERS
GLASS
GOLD
INFRARED SPECTRA
MEASURING INSTRUMENTS
METALS
MICROSCOPY
NANOSTRUCTURES
ORGANIC COMPOUNDS
PARTICLES
QUANTITATIVE CHEMICAL ANALYSIS
SCANNING ELECTRON MICROSCOPY
SCATTERING
SPECTRA
SPECTROMETERS
SPECTROSCOPY
SUBSTRATES
SURFACES
SYNTHESIS
TITRATION
TRANSITION ELEMENTS
ULTRAVIOLET SPECTRA
VOLTAMETRY
VOLUMETRIC ANALYSIS
X-RAY DIFFRACTION