http://www.cnr.it/ontology/cnr/individuo/prodotto/ID274501

Synthesis and characterization of plasmonic nanoparticles and graphene for photovoltaics (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Synthesis and characterization of plasmonic nanoparticles and graphene for photovoltaics (Articolo in rivista) (literal)

Anno

2013-01-01T00:00:00+01:00 (literal)

Alternative label

M.M.Giangregorio, M.Losurdo, G.V.Bianco, E.Dilonardo, P.Capezzuto, G.Bruno (2013)
Synthesis and characterization of plasmonic nanoparticles and graphene for photovoltaics
in Materials Science and Engineering B
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

M.M.Giangregorio, M.Losurdo, G.V.Bianco, E.Dilonardo, P.Capezzuto, G.Bruno (literal)

Pagina inizio

559 (literal)

Pagina fine

567 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

178 (literal)

Rivista

Materials Science and Engineering B (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

9 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

Institute of Methodologies and of plasmas, IMIP-CNR (literal)

Titolo

Synthesis and characterization of plasmonic nanoparticles and graphene for photovoltaics (literal)

Abstract

Here we discuss the use in solar cells of graphene grown by chemical vapor deposition (CVD) and of plasmonic gold nanoparticles (Au NPs) deposited by sputtering. The Au NPs have been coupled with a-Si heterojunction solar cells, with an organic active layer used in organic photovoltaics, and with graphene. Extensive characterization of those three systems by the optical technique of spectroscopic ellipsometry, which is suitable to monitor and analyze the plasmon resonance of the Au NPs, by the microstructural technique of Raman spectroscopy, which is suitable to analyze graphene properties and doping, and by atomic force microscopy has been carried out. Those techniques highlighted interactions between Au NPs and silicon, polymer and graphene, which lead to variation in the plasmon resonance of Au NPs and consequently in the characteristics of the Au NPs/Si, Au NPs/polymer and Au NPs/graphene hybrids. Specifically, we found that an optimal size and density of Au NPs are able to enhance the efficiency of c- Si/a-Si heterojunction solar cells and that exceeding with Au NPs size and density causes device shortcut because of interface interdiffusion between silicon and gold. To discuss organic photovoltaics, Au NPs have been combined with an electro-donating conjugated polymer, the poly[1,4bis(2-thienyl)-2,5-bis- (2-ethyl-hexyloxyphenylenes)]. We found that there is a strong correlation between the thickness and morphology of the organic active layer, which affects the energy and amplitude of the Au NPs plasmon resonance. Finally, Au NPs have been deposited on graphene. We found that Au NPs show the plasmon resonance in the region where graphene is transparent and also yield p-type doping of graphene decreasing its sheet resistance. (literal)

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