Optical characterization of organic blend films integrating metallic nanoparticles - Université de Limoges
Article Dans Une Revue Solar Energy Materials and Solar Cells Année : 2012

Optical characterization of organic blend films integrating metallic nanoparticles

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.

Dates et versions

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

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Citer

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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