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Article Dans Une Revue Solar Energy Materials and Solar Cells Année : 2012

Optical characterization of organic blend films integrating metallic nanoparticles

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Résumé

A study of plasmonic phenomena produced by silver nanoparticles embedded in a photoactive (poly-3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) bulk heterojunction is performed via spectrophotometric and Raman characterizations. An enhanced absorption of light is experimentally obtained in a 90 nm-thick P3HT:PCBM interpenetrated blend layer incorporating evaporated 5 nm-thick silver nanoparticles on glass/ITO substrate. An increase of Raman signal is observed and correlated to an increase of the electromagnetic field close to metallic nanoparticles. This is confirmed by Finite-Difference Time-Domain (FDTD) modeling considering an organized 2D-grating of ellipsoidal domes. This paper shows also that the use of relatively thick organic blend films as probe molecules upon plasmonic structures does not obscure the Raman response.
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Dates et versions

hal-00911119 , version 1 (28-11-2013)

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Sylvain Vedraine, Philippe Torchio, Alexandre Merlen, Joanna Bagierek, François Flory, et al.. Optical characterization of organic blend films integrating metallic nanoparticles. Solar Energy Materials and Solar Cells, 2012, 102, pp.31-35. ⟨10.1016/j.solmat.2011.11.045⟩. ⟨hal-00911119⟩
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