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Identifier 000378413
Title Development and study of plasmonic organic photovoltaic cells
Alternative Title Ανάπτυξη και μελέτη πλασμονικών οργανικών φωτοβολταϊκών κελιών
Author Σπυρόπουλος, Γεώργιος Δημ
Thesis advisor Στρατάκης, Εμμανουήλ
Κυμάκης, Εμμανουήλ
Abstract The effect of incorporation of surfactant-free metallic nanoparticles (NPs) into the photoactive layer (P3HT:PCBM) and at the PEDOT:PSS/P3HT:PCBM interface of organic bulk heterojunction (BHJ) photovoltaic (PV) devices was systematically studied. It is evidenced that the NPs doping give rise to a dual improvement effect. On the one hand it leads to a better PV efficiency and on the other hand it results in enhanced photovoltaic stability and thus to slower device degradation rate during prolonged illumination. Spectroscopic analysis combined with photon-to-electron conversion efficiency measurements indicate that the efficiency improvement can be attributed to enhanced light harvesting and subsequent exciton generation rate into the photoactive layer due to localized surface plasmon resonant absorption and scattering effects. Besides this, the improved degradation stability is found to be caused by the enhanced structural and morphological properties of the NPs doped blend, as evidenced by an original approach based on joint in-situ time-resolved X-ray and atomic force microscopy monitoring. The role of the NPs surface termination is investigated by monitoring the performance of PV devices doped with various types of coated NPs.
Language English
Subject Nanoparticles
Plasmonic organic photovoltaics
Πλασμονικά οργανικά φωτοβολταϊκά
Issue date 2013-02-04
Collection   Faculty/Department--Faculty of Sciences and Engineering--Department of Materials Science and Technology--Post-graduate theses
  Type of Work--Post-graduate theses
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