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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/5311

Title: Optimization of morphology of P3HT/PCBM films for organic solar cells: effects of thermal treatments and spin coating solvents
Authors: Janssen, G.
Aguirre, Aranzazu
Goovaerts, E.
Poortmans, J.
Issue Date: 2007
Citation: European physical journal: applied physics, 37(3). p. 287-290
Abstract: We demonstrate, by means of light-induced EPR and optical spectroscopy, that thermal treatment of P3HT/PCBM films prepared from CB solution results in a decrease of the charge transfer yields. The improved performance of solar cells is therefore attributed to optimization of the morphology, in particular molecular order in the P3HT regions, which could be monitored by optical absorption and resonant Raman scattering (RRS). We further found that spin coating from slowly evaporating solvents leads directly (i.e., without thermal treatment) to optimal morphologies of the P3HT/PCBM films, with similar results for charge transfer, morphology and solar cell efficiencies.
URI: http://hdl.handle.net/1942/5311
DOI: 10.1051/epjap:2007002
ISI #: 000244839000011
ISSN: 1286-0042
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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