Pentacene/perylene co-deposited solar cells

Abstract

Solar cells were fabricated with a photoactive layer consisting of a vacuum co-evaporated film of pentacene and a perylene derivative: N, N′-ditridecylperylene-3, 4, 9, 10-tetracarboxylic diimide. The device characteristics were evaluated in an oxygen-free environment. Maximum power conversion efficiency of 0.54% under standard AM 1.5 illumination (100 mW/cm 2) is obtained with a short circuit current density in excess of 5 mA/cm 2. Photocurrent action spectrum shows that such composite film may permit to cover the entire spectrum of visible light with an EQE greater than 10%.