title: Working from Both Sides: Composite Metallic Semitransparent Top Electrode for High Performance Perovskite Solar Cells.
abstract: We report herein perovskite solar cells using solution-processed silver nanowires (AgNWs) as transparent top electrode with markedly enhanced device performance, as well as stability by evaporating an ultrathin transparent Au (UTA) layer beneath the spin-coated AgNWs forming a composite transparent metallic electrode. The interlayer serves as a physical separation sandwiched in between the perovskite/hole transporting material (HTM) active layer and the halide-reactive AgNWs top-electrode to prevent undesired electrode degradation and simultaneously functions to significantly promote ohmic contact. The as-fabricated semitransparent PSCs feature a Voc of 0.96 V, a Jsc of 20.47 mA cm(-2), with an overall PCE of over 11% when measured with front illumination and a Voc of 0.92 V, a Jsc of 14.29 mA cm(-2), and an overall PCE of 7.53% with back illumination, corresponding to approximately 70% of the value under normal illumination conditions. The devices also demonstrate exceptional fabrication repeatability and air stability.
authors.affiliation: State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China.
authors.forename: Xuezeng
authors.initials: X
authors.lastname: Dai
authors.affiliation: State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China.
authors.forename: Heping
authors.initials: H
authors.lastname: Shen
authors.affiliation: State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Luo
authors.affiliation: State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China.
authors.forename: Xingyue
authors.initials: X
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China.|Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Materials and Chemical Engineering Institute, Hainan University , Haikou 570228, China.
authors.forename: Jianbao
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Lin
keywords: composite metallic; perovskite solar cells; semitransparent; silver nanowires; top electrode