title: Highly Efficient and Air Stable Inverted Polymer Solar Cells Using LiF-Modified ITO Cathode and MoO3/AgAl Alloy Anode.
abstract: The performance and air stability of inverted polymer solar cells (PSCs) were greatly improved using a combination of LiF-modified ITO cathode and a MoO3/AgAl alloy anode. The power conversion efficiency (PCE) of PSCs with AgAl contact reached 9.4%, which is higher than that of the cells with Ag (8.8%) and Al electrode (7.6%). The PCE of AgAl-based PSCs can further increase up to 10.3% through incorporating an ultrathin LiF-modified ITO. AgAl-based cells also exhibit a superior stability compared to the cells with Ag and Al contacts. PCE of the AgAl-based cells without encapsulation remains 78% of its original value after the cells were aged for 380 days in air. The presence of a LiF-modified ZnO interlayer between ITO and the organic active layer improves the charge collection. The improvement in PCE and stability of the AgAl-based cells is primarily attributed to the formation of AlOx at the MoO3/AgAl interface, preventing Ag diffusion and improving the built-in potential across the active layer in the cells.
authors.affiliation: Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, and Department of Physics, East China Normal University , Shanghai 200062, China.
authors.forename: Xiangkun
authors.initials: X
authors.lastname: Jia
authors.affiliation: Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, and Department of Physics, East China Normal University , Shanghai 200062, China.
authors.forename: Ziyao
authors.initials: Z
authors.lastname: Jiang
authors.affiliation: Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, and Department of Physics, East China Normal University , Shanghai 200062, China.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Chen
authors.affiliation: School of Automation Engineering, Shanghai University of Electric Power , Shanghai 200090, China.
authors.forename: Jianping
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, and Department of Physics, East China Normal University , Shanghai 200062, China.
authors.forename: Likun
authors.initials: L
authors.lastname: Pan
authors.affiliation: Department of Physics, Institute of Advanced Materials, and Institute of Research and Continuing Education (Shenzhen), Hong Kong Baptist University , Kowloon Tong, Hong Kong.
authors.forename: Furong
authors.initials: F
authors.lastname: Zhu
authors.affiliation: Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, and Department of Physics, East China Normal University , Shanghai 200062, China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Sun
authors.affiliation: Engineering Research Center for Nanophotonics and Advanced Instrument, Ministry of Education, and Department of Physics, East China Normal University , Shanghai 200062, China.
authors.forename: Sumei
authors.initials: S
authors.lastname: Huang
keywords: AgAl alloy; LiF interlayer; MoO3; ZnO; electrodes; high efficiency; polymer solar cells; stability