Plasmonic structures integrated in organic solar cells

Sylvain Vedraine (1) , Philippe Torchio (2) , Hassina Derbal-Habak (3) , Jean-Jacques Simon (4) , Ludovic Escoubas (4)

1 Equipe Optoélectronique et Photovoltaïque
2 OPTO-PV
3 POMA - Propriétés Optiques des Matériaux et Applications
4 OptoPV

Experimental and numerical results concerning the influence of silver nanoparticles on the optical absorption of organic devices are presented. The metallic nanoparticles (NPs) are placed inside an interpenetrated poly(3-hexylthiophene): [6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) layer using a physical vapor deposition technique. An absorption enhancement by comparison to devices without NPs is shown. An increase of the absorption by annealing is also observed. Moreover, calculations are performed via a numerical analysis based on a Finite Difference Time Domain (FDTD) method. We demonstrate that the light absorption can mainly occur inside the active layer instead of inside the metallic NPs.

Mots clés: Organic photovoltaics; Absorption; Nanoparticles; Numerical analysis; Annealing; Finite-difference time-domain method; Physical vapor deposition; Silver

Domaines: Sciences de l'ingénieur [physics]

Sylvain Vedraine, Philippe Torchio, Hassina Derbal-Habak, Jean-Jacques Simon, Ludovic Escoubas. Plasmonic structures integrated in organic solar cells. Proceedings of SPIE, the International Society for Optical Engineering, 2010, 7772, pp.777219. ⟨10.1117/12.859898⟩. ⟨hal-00911129⟩