title: Direct measurements of exciton diffusion length limitations on organic solar cell performance.
abstract: Through a combination of X-ray scattering and energy-filtered electron microscopy, we have quantitatively examined the relationship between the mesostructure of the photoactive layer and device performance in PBTTT/PC(71)BM solar cells. We can predict device performance from X-ray structural data through a simple morphological model which includes the exciton diffusion length.
authors.affiliation: Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
authors.forename: Derek R
authors.initials: DR
authors.lastname: Kozub
authors.forename: Kiarash
authors.initials: K
authors.lastname: Vakhshouri
authors.forename: Sameer Vajjala
authors.initials: SV
authors.lastname: Kesava
authors.forename: Cheng
authors.initials: C
authors.lastname: Wang
authors.forename: Alexander
authors.initials: A
authors.lastname: Hexemer
authors.forename: Enrique D
authors.initials: ED
authors.lastname: Gomez