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Improvement of photoelectrochemical and optical characteristics of MEH-PPV using titanium dioxide nanoparticles

Identifieur interne : 000B29 ( Main/Repository ); précédent : 000B28; suivant : 000B30

Improvement of photoelectrochemical and optical characteristics of MEH-PPV using titanium dioxide nanoparticles

Auteurs : RBID : Pascal:13-0188188

Descripteurs français

Pascal (Inist)
- Caractéristique optique, Constante optique, Hétérojonction, Evaluation performance, Exciton, Effet photovoltaïque, Revêtement centrifugation, Dépôt centrifugation, Addition étain, Couche ITO, Morphologie surface, Structure surface, Revêtement composite, Film complexe, Rugosité, Courant photoélectrique, Photoconductivité, Microstructure, Effet photoélectrochimique, Phénylènevinylène dérivé polymère, Oxyde de titane, Nanoparticule, Hétérostructure, Polymère, Phénylènevinylène polymère, Oxyde d'indium, Matériau composite, Composé organique, Composé minéral, Matériau dopé, 7135, 8105L, 6865, TiO2, ITO.
Wicri :
- concept : Polymère, Matériau composite, Composé minéral.

English descriptors

KwdEn :
- Composite coating, Composite film, Composite materials, Doped materials, Excitons, Heterojunctions, Heterostructures, ITO layers, Indium oxide, Inorganic compounds, Microstructure, Nanoparticles, Optical characteristic, Optical constants, Organic compounds, Performance evaluation, Phenylenevinylene derivative polymer, Phenylenevinylene polymer, Photoconductivity, Photocurrents, Photoelectrochemical effect, Photovoltaic effects, Polymers, Roughness, Spin-on coating, Spin-on coatings, Surface morphology, Surface structure, Tin additions, Titanium oxide.

Abstract

The use of bulk heterojunctions can increase the efficiency of exciton dissociation in polymer-based photovoltaics. We prepared and characterized bulk heterojunctions of poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) and titanium dioxide nanoparticles deposited by spin coating on indium tin oxide substrates. The surface morphology of the MEH-PPV+TiO₂ composite films revealed that addition of TiO₂ nanoparticles increased the film roughness. The effect of TiO₂ nanoparticles on the photoelectrochemical and optical characteristics of MEH-PPV polymer heterojunctions was studied. Addition of TiO₂ nanoparticles improved the absorbance of MEH-PPV composite films. Moreover, the photocurrent of the composite devices increased with the TiO₂ nanoparticle concentration. These observations provide an insight into new approaches to improve the light collection efficiency in photoconductive polymers.

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Pascal:13-0188188

Le document en format XML

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<author><name sortKey="Nessark, Belkacem" uniqKey="Nessark B">Belkacem Nessark</name>
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<term>Heterojunctions</term>
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<term>Microstructure</term>
<term>Nanoparticles</term>
<term>Optical characteristic</term>
<term>Optical constants</term>
<term>Organic compounds</term>
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<term>Spin-on coating</term>
<term>Spin-on coatings</term>
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<front><div type="abstract" xml:lang="en">The use of bulk heterojunctions can increase the efficiency of exciton dissociation in polymer-based photovoltaics. We prepared and characterized bulk heterojunctions of poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) and titanium dioxide nanoparticles deposited by spin coating on indium tin oxide substrates. The surface morphology of the MEH-PPV+TiO<sub>2</sub>
 composite films revealed that addition of TiO<sub>2</sub>
 nanoparticles increased the film roughness. The effect of TiO<sub>2</sub>
 nanoparticles on the photoelectrochemical and optical characteristics of MEH-PPV polymer heterojunctions was studied. Addition of TiO<sub>2</sub>
 nanoparticles improved the absorbance of MEH-PPV composite films. Moreover, the photocurrent of the composite devices increased with the TiO<sub>2</sub>
 nanoparticle concentration. These observations provide an insight into new approaches to improve the light collection efficiency in photoconductive polymers.</div>
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 composite films revealed that addition of TiO<sub>2</sub>
 nanoparticles increased the film roughness. The effect of TiO<sub>2</sub>
 nanoparticles on the photoelectrochemical and optical characteristics of MEH-PPV polymer heterojunctions was studied. Addition of TiO<sub>2</sub>
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   |texte=   Improvement of photoelectrochemical and optical characteristics of MEH-PPV using titanium dioxide nanoparticles
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Improvement of photoelectrochemical and optical characteristics of MEH-PPV using titanium dioxide nanoparticles

Improvement of photoelectrochemical and optical characteristics of MEH-PPV using titanium dioxide nanoparticles

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