title: Magnetron sputtered zinc oxide nanorods as thickness-insensitive cathode interlayer for perovskite planar-heterojunction solar cells.
abstract: Suitable electrode interfacial layers are essential to the high performance of perovskite planar heterojunction solar cells. In this letter, we report magnetron sputtered zinc oxide (ZnO) film as the cathode interlayer for methylammonium lead iodide (CH3NH3PbI3) perovskite solar cell. Scanning electron microscopy and X-ray diffraction analysis demonstrate that the sputtered ZnO films consist of c-axis aligned nanorods. The solar cells based on this ZnO cathode interlayer showed high short circuit current and power conversion efficiency. Besides, the performance of the device is insensitive to the thickness of ZnO cathode interlayer. Considering the high reliability and maturity of sputtering technique both in lab and industry, we believe that the sputtered ZnO films are promising cathode interlayers for perovskite solar cells, especially in large-scale production.
authors.affiliation: College of Materials, Xiamen University , Xiamen 361005, P. R. China.
authors.forename: Lusheng
authors.initials: L
authors.lastname: Liang
authors.forename: Zhifeng
authors.initials: Z
authors.lastname: Huang
authors.forename: Longhua
authors.initials: L
authors.lastname: Cai
authors.forename: Weizhong
authors.initials: W
authors.lastname: Chen
authors.forename: Baozeng
authors.initials: B
authors.lastname: Wang
authors.forename: Kaiwu
authors.initials: K
authors.lastname: Chen
authors.forename: Hua
authors.initials: H
authors.lastname: Bai
authors.forename: Qingyong
authors.initials: Q
authors.lastname: Tian
authors.forename: Bin
authors.initials: B
authors.lastname: Fan
keywords: electron transport layer; flexible solar cell; short circuit current