title: Effect of mixed layer crystallinity on the performance of mixed heterojunction organic photovoltaic cells.
abstract: Organic vapor-phase deposition (OVPD) is used to grow tetraphenyldibenzoperiflanthen (DBP):C70 mixed heterojunction photovoltaic devices. Compared with vacuum thermal evaporation (VTE), the OVPD-grown film develops nanocrystalline domains of C70. Optimized OVPD-grown OPVs have a 61% fill factor for a 100 nm active layer thickness, whereas VTE-grown devices have a 47% fill factor at the same thickness.
authors.affiliation: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, 48109, USA.
authors.forename: Byeongseop
authors.initials: B
authors.lastname: Song
authors.forename: Cedric
authors.initials: C
authors.lastname: Rolin
authors.forename: Jeramy D
authors.initials: JD
authors.lastname: Zimmerman
authors.forename: Stephen R
authors.initials: SR
authors.lastname: Forrest
keywords: morphology; nanocrystalline; organic vapor phase deposition; vacuum thermal evaporation