Numerical optimization of multilayer electrodes without indium for use in organic solar cells

Bou Adrien (1) , Philippe Torchio (1) , Sylvain Vedraine (2) , Damien Barakel , Bruno Lucas (2) , Jean-Christian Bernède (3) , P.Y. Thoulon (4) , Ricci M.

1 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
2 XLIM-MINACOM - MINACOM
3 UN UFR ST - Université de Nantes - UFR des Sciences et des Techniques
4 Crosslux SA

A numerical process is developed on a Transfer-Matrix Method (TMM) to calculate the optical properties of multilayers involved in thin film solar cells. Using the bulk complex refractive indices in a considered spectral range for each material allows us to calculate the transmittance of the whole structure and the intrinsic absorption inside the sole active layer. An optical optimization of oxide|metal|oxide trilayer electrode in the air and with a (poly-3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) bulk heterojunction based organic solar cell is performed. The ZnO|Ag|ZnO structure is specifically studied in order to avoid the use of indium in such photovoltaic components.

Mots clés: Organic solar cell; Optical optimization; TMM; Intrinsic absorption efficiency; Free-ITO electrode; Oxide/metal/oxide

Domaines: Sciences de l'ingénieur [physics]; Optique / photonique

Bou Adrien, Philippe Torchio, Sylvain Vedraine, Damien Barakel, Bruno Lucas, et al.. Numerical optimization of multilayer electrodes without indium for use in organic solar cells. Solar Energy Materials and Solar Cells, 2014, 125, pp.310-317. ⟨10.1016/j.solmat.2013.12.026⟩. ⟨hal-01245387⟩