Enhancement of device performance of organic solar cells by an interfacial perylene derivative layer.
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.
Kim
Inho
I
School of Mechanical, Aerospace, Chemical and Materials Engineering and Advanced Photovoltaics Center, Arizona State University, Tempe, Arizona 85284, USA.
Haverinen
Hanna M
HM
Li
Jian
J
Jabbour
Ghassan E
GE
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
D009930:Organic Chemicals; D010569:Perylene