title: Interface engineering via an insulating polymer for highly efficient and environmentally stable perovskite solar cells.
abstract: A tunnelling contact of polystyrene nanofilm was introduced for the first time at the interface of perovskite/hole transfer layer, leading to a significantly reduced charge recombination. Moreover, such a polymeric contact worked as a hydrophobic encapsulation layer for effectively protecting the perovskite against humidity. The resultant PSCs displayed a peak efficiency of 17.80% (vs. 15.90% of the control cell) and an enhanced stability.
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. cjlin@xmu.edu.cn.
authors.forename: Xiaoru
authors.initials: X
authors.lastname: Wen
authors.affiliation: The Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA. gaod@pitt.edu.
authors.forename: Jiamin
authors.initials: J
authors.lastname: Wu
authors.affiliation: Research Institute for Soft Matter and Biomimetics, Fujian Provincial Key Laboratory for Soft Functional Materials Research, Department of Physics, Xiamen University, Xiamen 361005, China. mdye@xmu.edu.cn.
authors.forename: Meidan
authors.initials: M
authors.lastname: Ye
authors.affiliation: The Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA. gaod@pitt.edu.
authors.forename: Di
authors.initials: D
authors.lastname: Gao
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. cjlin@xmu.edu.cn.
authors.forename: Changjian
authors.initials: C
authors.lastname: Lin