title: Highly efficient organic tandem solar cell with a SubPc interlayer based on TAPC:C70 bulk heterojunction.
abstract: We report a small molecule tandem organic photovoltaic (OPV) cell with a high power conversion efficiency (PCE) of 7.27%. This cell contains two subcells with an identical mixed active layer of C70:5 wt%TAPC (1,1-bis-(4-bis(4-methyl-phenyl)-amino-phenyl)-cyclohexane). The performance was dramatically improved by simply inserting a thin boron subphthalocyanine chloride (SubPc) interlayer, which results in an increase of the short-circuit current and open-circuit voltage as well as a decrease of the series resistance of the tandem cell. The response of the cell only contributed from the absorption of C70. The high PCE was attributed to the high absorption efficiency of C70 and improved holes extraction efficiency at the anode due to the band bending occurs at both MoO3/SubPc and SubPc/C70:5 wt%TAPC interfaces.
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Gao
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Fangming
authors.initials: F
authors.lastname: Jin
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
authors.forename: Wenlian
authors.initials: W
authors.lastname: Li
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
authors.forename: Zisheng
authors.initials: Z
authors.lastname: Su
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
authors.forename: Bei
authors.initials: B
authors.lastname: Chu
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
authors.forename: Junbo
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
authors.forename: Haifeng
authors.initials: H
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Hairuo
authors.initials: H
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Chengyuan
authors.initials: C
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Fuhua
authors.initials: F
authors.lastname: Hou
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Tong
authors.initials: T
authors.lastname: Lin
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.|University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Qiaogang
authors.initials: Q
authors.lastname: Song