title: Enhancement of device performance of organic solar cells by an interfacial perylene derivative layer.
abstract: We report that device performance of organic solar cells consisting of zinc phthalocyanine and fullerene (C(60)) can be enhanced by insertion of a perylene derivative interfacial layer between fullerene and bathocuproine (BCP) exciton blocking layer (EBL). The morphology of the BCP is influenced by the underlying N,N'-dihexyl-perylene-3,4,9,10-bis(dicarboximide) (PTCDI-C6), which promotes migration of the cathode metal into the BCP layer. Insertion of a PTCDI-C6 layer between fullerene and BCP layers enhances the power conversion efficiency to 2.5%, an improvement of 32% over devices without PTCDI-C6 layer. The enhancement in device performance by insertion of PTCDI-C6 is attributed to a reduction in series resistance due to promoted metal migration into BCP and optimized optical interference effects in multilayered devices.
authors.affiliation: School of Mechanical, Aerospace, Chemical and Materials Engineering and Advanced Photovoltaics Center, Arizona State University, Tempe, Arizona 85284, USA.
authors.forename: Inho
authors.initials: I
authors.lastname: Kim
authors.forename: Hanna M
authors.initials: HM
authors.lastname: Haverinen
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.forename: Ghassan E
authors.initials: GE
authors.lastname: Jabbour
mesh_terms: D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D009930:Organic Chemicals / Q000737:chemistry*; D010569:Perylene / Q000737:chemistry*; D012993:Solar Energy; D013499:Surface Properties
chemical_list: D009930:Organic Chemicals; D010569:Perylene