title: Highly efficient organic photovoltaics via incorporation of solution-processed cesium stearate as the cathode interfacial layer.
abstract: Highly efficient organic solar cells were successfully demonstrated by incorporating a solution-processed cesium stearate between the photoactive layer and metal cathode as a novel cathode interfacial layer. The analysis of surface potential change indicated the existence of an interfacial dipole between the photoactive layer and metal electrode, which was responsible for the power conversion efficiency (PCE) enhancement of devices. The significant improvement in the device performance and the simple preparation method by solution processing suggested a promising and practical pathway to improve the efficiency of the organic solar cells.
authors.affiliation: Institute of New Energy Technology, Ningbo Institute of Material Technology and Engineering (NIMTE), Chinese Academy of Science (CAS) , Ningbo, Zhejiang 315201, P. R. China.
authors.forename: Guojie
authors.initials: G
authors.lastname: Wang
authors.forename: Tonggang
authors.initials: T
authors.lastname: Jiu
authors.forename: Chunming
authors.initials: C
authors.lastname: Sun
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Pandeng
authors.initials: P
authors.lastname: Li
authors.forename: Fushen
authors.initials: F
authors.lastname: Lu
authors.forename: Junfeng
authors.initials: J
authors.lastname: Fang