Waveguide effect enhancement of local photocurrent in hybrid organic/inorganic solar cells

Abstract

The local efficiency of hybrid ZnO-nanorods/C 60 /ZnPc:C 60 /MoO 3 /Ag solar cells, with different nanorods length has been investigated by scanning near-field optical microscopy. Simultaneous spatially resolved measurements of topography and photocurrent suggest a waveguide effect enhancement of the local photocurrent. This interpretation is supported by finite element method simulations of the light propagation in the solar cell.