title: Resonant cavity enhanced light harvesting in flexible thin-film organic solar cells.
abstract: Dielectric/metal/dielectric (DMD) electrodes have the potential to significantly increase the absorption efficiency and photocurrent in flexible organic solar cells. We demonstrate that this enhancement is attributed to a broadband cavity resonance. Silver-based semitransparent DMD electrodes with sheet resistances below 10 ohm/sq. are fabricated on flexible polyethylene terephthalate (PET) substrates in a high-throughput roll-to-roll sputtering tool. We carefully study the effect of the semitransparent DMD electrode (here composed of Zn(x)Sn(y)O(z)/Ag/In(x)Sn(y)O(z)) on the optical device performance of a copper phthalocyanine (CuPc)/fullerene (C60) bilayer cell and illustrate that a resonant cavity enhanced light trapping effect dominates the optical behavior of the device.
authors: Electrical Engineering Department, Stanford University, Stanford, California 94305, USA.
authors: Nicholas P
authors: NP
authors: Sergeant
authors: Bjoern
authors: B
authors: Niesen
authors: Albert S
authors: AS
authors: Liu
authors: Lee
authors: L
authors: Boman
authors: Chris
authors: C
authors: Stoessel
authors: Paul
authors: P
authors: Heremans
authors: Peter
authors: P
authors: Peumans
authors: Barry P
authors: BP
authors: Rand
authors: Shanhui
authors: S
authors: Fan