title: Multilayer Transparent Top Electrode for Solution Processed Perovskite/Cu(In,Ga)(Se,S)2 Four Terminal Tandem Solar Cells.
abstract: Halide perovskites (PVSK) have attracted much attention in recent years due to their high potential as a next generation solar cell material. To further improve perovskites progress toward a state-of-the-art technology, it is desirable to create a tandem structure in which perovskite may be stacked with a current prevailing solar cell such as silicon (Si) or Cu(In,Ga)(Se,S)2 (CIGS). The transparent top electrode is one of the key components as well as challenges to realize such tandem structure. Herein, we develop a multilayer transparent top electrode for perovskite photovoltaic devices delivering an 11.5% efficiency in top illumination mode. The transparent electrode is based on a dielectric/metal/dielectric structure, featuring an ultrathin gold seeded silver layer. A four terminal tandem solar cell employing solution processed CIGS and perovskite cells is also demonstrated with over 15% efficiency.
authors.affiliation: †Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States.
authors.forename: Yang Michael
authors.initials: YM
authors.lastname: Yang
authors.affiliation: †Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States.|‡California NanoSystems Institute, University of California, Los Angeles, California 90095, United States.
authors.forename: Qi
authors.initials: Q
authors.lastname: Chen
authors.affiliation: †Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States.|‡California NanoSystems Institute, University of California, Los Angeles, California 90095, United States.
authors.forename: Yao-Tsung
authors.initials: YT
authors.lastname: Hsieh
authors.affiliation: †Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States.|‡California NanoSystems Institute, University of California, Los Angeles, California 90095, United States.
authors.forename: Tze-Bin
authors.initials: TB
authors.lastname: Song
authors.affiliation: †Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States.|‡California NanoSystems Institute, University of California, Los Angeles, California 90095, United States.
authors.forename: Nicholas De
authors.initials: ND
authors.lastname: Marco
authors.affiliation: †Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States.|‡California NanoSystems Institute, University of California, Los Angeles, California 90095, United States.
authors.forename: Huanping
authors.initials: H
authors.lastname: Zhou
authors.affiliation: †Department of Materials Science and Engineering, University of California, Los Angeles, California 90095, United States.|‡California NanoSystems Institute, University of California, Los Angeles, California 90095, United States.
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
keywords: dielectric/metal/dielectric; perovskite; solar cell; tandem; transparent electrode