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Hybrid zinc oxide conjugated polymer bulk heterojunction solar cells
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.ORCID iD: 0000-0002-7104-7127
Eindhoven University of Technology, Netherlands.
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2005 (English)In: Journal of Physical Chemistry B, ISSN 1520-6106, E-ISSN 1520-5207, Vol. 109, no 19, p. 9505-9516Article in journal (Refereed) Published
Abstract [en]

Bulk heterojunction photovoltaic devices based on blends of a conjugated polymer poly [2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) as electron donor and crystalline ZnO nanoparticles (nc-ZnO) as electron acceptor have been studied. Composite nc-ZnO:MDMO-PPV films were cast from a common solvent mixture. Time-resolved pump-probe spectroscopy revealed that a photoinduced electron transfer from MDMO-PPV to nc-ZnO occurs in these blends on a sub-picosecond time scale and produces a long-lived (milliseconds) charge-separated state. The photovoltaic effect in devices, made by sandwiching the active nc-ZnO:MDMO-PPV layer between charge-selective electrodes, has been studied as a function of the ZnO concentration and the thickness of the layer. We also investigated changing the degree and type of mixing of the two components through the use of a surfactant for ZnO and by altering the size and shape of the nc-ZnO particles. Optimized devices have an estimated AM1.5 performance of 1.6% with incident photon to current conversion efficiencies up to 50%. Photoluminescence spectroscopy, atomic force microscopy, and transmission electron microscopy have been used to gain insight in the morphology of these blends.

Place, publisher, year, edition, pages
American Chemical Society , 2005. Vol. 109, no 19, p. 9505-9516
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-141510DOI: 10.1021/jp050745xISI: 000229134000048PubMedID: 16852143OAI: oai:DiVA.org:liu-141510DiVA, id: diva2:1145609
Available from: 2017-09-29 Created: 2017-09-29 Last updated: 2017-10-04

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Kemerink, Martijn
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CiteExportLink to record
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