Eliminating RC-Effects in Transient Photocurrent Measurements on Organic Photodiodes

In this letter, we present a method to eliminate the influence of the RC-constant in transient photocurrent measurements on organic photodiodes and solar cells. With this technique, it is possible to reconstruct the conduction current from measurements and extract relevant charge transport parameters. This is demonstrated by the application of this method on RC-dominated measurements of transient photocurrent responses on organic photodiodes revealing the power law decays being typical for dispersive charge transport in the conduction current. Vice versa, our approach allows us to simulate the impact of an optional RC-constant on simulation data, which is generated neglecting the serial resistance of real devices.