Pyroelectric Properties of PVDF:MWCNT Nanocomposite Film for Uncooled Infrared Detectors

Edwards, Matthew; Batra, Ashok K.; Chilvery, Ashwith; Guggilla, Padmaja; Curley, Michael J.; Aggarwal, Mohan D.

doi:10.4236/msa.2012.312124

Cited by 14 publications

(18 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Isothermal runs were carried out for frequency domain 1 kHz-1000kHz and different temperature varying from room temperature to 80 ºC. The detail of the instrumentation used is described in our earlier publications [5][6][7][8].…”

Section: Composite Filmmentioning

confidence: 99%

“…Recently, nanocomposites composed of ceramic particles and polymer matrices have been fabricated as a means of engineering dielectric, pyroelectric and piezoelectric properties and energy storage capacity [1][2][3][4][5][6][7][8][9]. Furthermore, reduction is size of high performance electronic devices require integration of passive components such as resistors and capacitors.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dielectric Behavior of Paint/PZT Nanocomposite Films

Batra

Alomari

Thomas

2015

BJAST

View full text Add to dashboard Cite

This article presents, for the first time, the detailed functionality of 0-3 Paint/PZT composite films concerning their dielectric and electric transport properties. Ferroelectric Paint: Lead Zirconate Titanate (Paint/PZT) composite films have been fabricated by the conventional cost effective paint brushing technique. The dielectric parameters of the composite films were calculated by the measurement of capacitance and dielectric loss. The properties investigated include, dielectric constants , ε' and ε'' as a function of temperature, frequency and composition. From the foregoing parameters, it is indicated that the dielectric constant and A. C. conductivity (σ AC) increase with increase of filler content, temperature and frequency, implying functionality of the films. The results reveal that σ AC obeys the relation σ AC = Aω s , and exponent s, was found to decrease by increasing the temperature. It was found that, the correlated barrier hopping (C. B. H.) is the dominant conduction mechanism in nanocomposite films fabricated.

show abstract

Section: Composite Filmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dielectric Behavior of Paint/PZT Nanocomposite Films

Batra

Alomari

Thomas

2015

BJAST

View full text Add to dashboard Cite

show abstract

“…The electrode-limited conduction mechanisms are thought to develop from the electrical properties at the electrode-dielectric contact, and the most important parameter in this type of conduction is the barrier height that occurs at the electrode-dielectric interface [6] [7]. The current due to thermionic emission is highly dependent on the temperature, but the tunneling current is nearly temperature independent.…”

Section: Theory Of Electrical Conduction In Dielectricsmentioning

confidence: 99%

“…The PVDF thin film are prepared from casting a gel-like solution of PVDF in a mixture with methyl ethyl ketone (MEK) and allowed to dry followed by pressing the precursor material to release stress when achieving large diameter PVDF thin films [7]- [20].…”

Section: Making Large Pvdf Thin Filmsmentioning

confidence: 99%

Temperature Dependent Surface Resistivity Measures of Commercial, Multiwall Carbon Nanotubes (MWCNT), and Silver Nano-Particle Doped Polyvinyl Alcohol (PVA) Films

Edwards¹,

Egarievwe²,

Janen³

et al. 2014

MSA

View full text Add to dashboard Cite

Pure and doped Polyvinylidene difluoride (PVDF) films, for the detection of infrared radiation, have been well documented using the mechanism of pyroelectricity. Alternatively, the electrical properties of films made from Polyvinyl Alcohol (PVA) have received considerable attention in recent years. The investigation of surface resistivities of both such films, to this point, has received far less consideration in comparison to pyroelectric effects. In this research, we report temperature dependent surface resistivity measurements of commercial, and of multiwall carbon nanotubes (MWCNT), or Ag-nanoparticle doped PVA films. Without any variation in the temperature range from 22˚C to 40˚C with controlled humidity, we found that the surface resistivity decreases initially, reaches a minimum, but rises steadily as the temperature continues to increase. This research was conducted with the combined instrumentation of the Keithley Model 6517 Electrometer and Keithley Model 8009 resistivity test fixture using both commercial and in-house produced organic thin films. With the objective to quantify the suitability of PVDF and PVA films as IR detector materials, when using the surface resistivity phenomenon, instead of or in addition to the pyroelectricity, surface resistivity measurements are reported when considering bolometry. We found that the surface resistivity measurements on PVA films were readily implemented.

show abstract

“…Un cooled thermal sensors have attracted much attention because they operate at room temperature. These devices offer the advantage of low cost fabrication and a wide band of 8 -14 μm [7].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Carbon nanotubes Near- Infrared Photoconductive Detector

Naje

Abdalkrema

Hamzah

et al. 2015

JAP

View full text Add to dashboard Cite

Carbon nanotubes (MWCNTs,F-MWCNTs,SWCNTs) with different structure were fabricated into near-infrared photodetectors. Indium Tin Oxide (ITO) was used as a substrate toÂ deposit CNTsÂ by the drop casting method. The CNTs carrier concentrations, conductivity and carrier mobility were measured. Different types CNTs photodetectors exhibit a good photoconductive performance at a wavelength (980-1200nm) especially SWCNTs, responsivityÂ was found to be (0.295 A W-1 ), specific detectivity (D*) 1Ã—109 cm.Hz1/2 .W-1 and response time 0.049ns.Â

show abstract

Pyroelectric Properties of PVDF:MWCNT Nanocomposite Film for Uncooled Infrared Detectors

Cited by 14 publications

References 8 publications

Dielectric Behavior of Paint/PZT Nanocomposite Films

Dielectric Behavior of Paint/PZT Nanocomposite Films

Temperature Dependent Surface Resistivity Measures of Commercial, Multiwall Carbon Nanotubes (MWCNT), and Silver Nano-Particle Doped Polyvinyl Alcohol (PVA) Films

Characterization of Carbon nanotubes Near- Infrared Photoconductive Detector

Contact Info

Product

Resources

About