Electrical properties of poly(p-phenylene vinylene) films with an incorporation of platinum metal nanoparticles

In this paper the influence of anisotropic molecular structure on the three dimensional electrical properties of both poly(phenylene vinylene), (PPV), and polyaniline, (PANI) oriented films is investigated. The anisotropic structure of the stretched PPV and PANI EB films were examined using a modified waveguide coupler while three dimensional impedance spectroscopy measurements were made using specially designed test fixtures that allowed the in-plane as well as the through-plane impedance to be measured. The unstretched PANI EB film has a random orientation and one-way stretching leads to a uniaxial structure. The unstretched PPV film, on the other hand, was found to have a highly planar structure and oneway stretching converts the planar structure to a uniaxial structure. Impedance measurements were made on PANI after it was doped with HCl while PPV films were measured in the undoped state. For HCl-doped PANI films, the conductivity along the stretch direction was found to increase with orientation. For undoped PPV films, the conductivity through the film thickness direction decreased with increasing orientation. For both polymers, the in-plane conductivity was significantly greater than the through-plane conductivity.

Download Full-text

Formation technology of effective electrode materials based porous silicon with platinum metal nanoparticles for autonomous energy systems

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/744/1/012001 ◽

2020 ◽

Vol 744 ◽

pp. 012001

Author(s):

A V Ragutkin ◽

A P Antropov ◽

M V Lebedeva ◽

A S Sigov ◽

N A Yashtulov

Keyword(s):

Porous Silicon ◽

Metal Nanoparticles ◽

Electrode Materials ◽

Energy Systems ◽

Platinum Metal

Download Full-text

Electron Transport and Electrical Properties in Poly(p-phenylene vinylene):Methanofullerene Bulk-Heterojunction Solar Cells

Journal of Nanoelectronics and Optoelectronics ◽

10.1166/jno.2019.2479 ◽

2019 ◽

Vol 14 (2) ◽

pp. 227-231 ◽

Cited By ~ 2

Author(s):

T.X. Zhang ◽

L.G. Wang ◽

J.J. Zhu ◽

J.Y. Liu ◽

S.J. Guo

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Electrical Properties ◽

Bulk Heterojunction ◽

Phenylene Vinylene ◽

Heterojunction Solar Cells ◽

Bulk Heterojunction Solar Cells

Download Full-text

Investigation of Electrical Properties of Polyaniline Nanocomposites by Impedance Spectroscopy

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.442.356 ◽

2010 ◽

Vol 442 ◽

pp. 356-363 ◽

Cited By ~ 5

Author(s):

A.B. Afzal ◽

M. Javed Akhtar ◽

M. Nadeem ◽

M. Masood-ul Hassan

Keyword(s):

Electrical Properties ◽

Impedance Spectroscopy ◽

Metal Nanoparticles ◽

Chemical Method ◽

Microphase Separation ◽

Conductivity Relaxation ◽

Considerable Decrease ◽

Gas Condensation ◽

Repeat Units ◽

Embedded Nanoparticles

Polyaniline (PANI) nanocomposites were synthesized by incorporating separately synthesized metal nanoparticles in 1-methyl-2-pyrrolidinone (NMP) solution of polyaniline. PANI was prepared by oxidative reduction of aniline using chemical method. Silver nanoparticles were produced by inert gas condensation; whereas gold nanoparticles were synthesized by the reduction of gold salt. FTIR confirmed the formation of PANI in all samples. The electrical properties of the nanocomposites were determined by impedance spectroscopy. The conductivity relaxation analysis suggested microphase separation of NMP plasticized films into phases of reduced and oxidized repeat units. The conductivity of PANI films increases with the increase in concentration of embedded nanoparticles. Incorporation of metal nanoparticles in PANI causes considerable decrease in the real part of impedance.

Download Full-text