Photogeneration of charge carriers in blends of conjugated polymers and semiconducting nanoparticles

PIENTKA, M ; WISCH, J ; et al.

In: Proceedings of Symposium D on Thin Film and Nano-Structured Materials for Photovoltaics, of the E-MRS 2003 Spring Conference, Strasbourg, France, June 10-13, 2003Thin solid films 451-52:48-53; Jg. 451-52 (2004) S. 48-53

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Composites of nanoparticles and conjugated polymers are studied via photoluminescence (PL), photoinduced absorption spectroscopy and light induced electron spin resonance (LESR) spectroscopy. Two different types of nanoparticles were investigated namely cadmium selenide and indium phosphide. They were available with a tri-n-octylphosphine-oxide-tri-n-octylphosphine shell or pyridine washed. Nanoparticles were mixed with poly(2-methoxy-5-(3-,7-dimethyloctyloxy)-1,4-phenylenevinylene) (OC1C10-PPV) in different weight ratios. The quenching of the PL, the formation of polaronic radicals as well as the occurrence of two new absorption bands are explained in the frame of a photoinduced charge transfer between the polymer and the nanocrystal. For a detailed analysis, the lifetime and recombination kinetics are studied by varying the chopper frequency and by changing the laser power. We find a broad distribution of lifetimes, which suggests a dispersive recombination process. With LESR the charge transfer process is confirmed and the g-factor of the polymer cation was determined. Time dependent studies show the involving of long living species in the recombination process.

Titel:	Photogeneration of charge carriers in blends of conjugated polymers and semiconducting nanoparticles
Autor/in / Beteiligte Person:	PIENTKA, M ; WISCH, J ; BÖGER, S ; PARISI, J ; DYAKONOV, V ; ROGACH, A ; TALAPIN, D ; WELLED, H
Link:	E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Quelle:	Proceedings of Symposium D on Thin Film and Nano-Structured Materials for Photovoltaics, of the E-MRS 2003 Spring Conference, Strasbourg, France, June 10-13, 2003Thin solid films 451-52:48-53; Jg. 451-52 (2004) S. 48-53
Veröffentlichung:	Lausanne: Elsevier Science, 2004
Medientyp:	Konferenz
Umfang:	print, 29 ref
ISSN:	0040-6090 (print)
Schlagwort:	Crystallography Cristallographie cristallogenèse Electronics Electronique Metallurgy, welding Métallurgie, soudage Condensed state physics Physique de l'état condensé Sciences exactes et technologie Exact sciences and technology Physique Physics Domaines interdisciplinaires: science des materiaux; rheologie Cross-disciplinary physics: materials science; rheology Science des matériaux Materials science Nanomatériaux et nanostructures : fabrication et caractèrisation Nanoscale materials and structures: fabrication and characterization Matériaux nanocristallins Nanocrystalline materials Nanopoudres Nanopowders Sciences appliquees Applied sciences Energie Energy Energie naturelle Natural energy Energie solaire Solar energy Conversion photovoltaïque Photovoltaic conversion Cellules solaires. Cellules photoélectrochimiques Solar cells. Photoelectrochemical cells Photoelectric conversion: solar cells and arrays Composé minéral Inorganic compounds Composé organique Organic compounds Métal transition composé Transition element compounds Cadmium séléniure Cadmium selenides Cellule solaire Solar cells Cinétique Kinetics Durée vie Lifetime Dépendance fréquence Frequency dependence Effet photoinduit Photoinduced effect Efecto fotoinducido Etude expérimentale Experimental study Génération porteur charge Charge carrier generation Generación portador carga Nanocristal Nanocrystal Nanomatériau Nanostructured materials Nanoparticule Nanoparticles Photogénération Photogeneration Fotogeneración Photoluminescence Polymère conjugué Conjugated polymer Polímero conjugado Processus recombinaison Recombination process Proceso recombinación Résonance paramagnétique éléctronique Electron paramagnetic resonance Semiconducteur II-VI II-VI semiconductors Spectre absorption Absorption spectra Transfert charge Charge transfer Transferencia carga Cd Se CdSe
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Conference Paper File Description: text Language: English Author Affiliations: Energy and Semiconductor Research Laboratory, University of Oldenburg, 26111 Oldenburg, Germany ; Photonics and Optoelectronics, LMU Munich, 80799 Munich, Germany ; Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany Rights: Copyright 2004 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Energy ; Physics and materials science

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