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Choose Your Own Adventure: Fabrication of Monolithic All‐Perovskite Tandem Photovoltaics
Author(s) -
Moot Taylor,
Werner Jérémie,
Eperon Giles E.,
Zhu Kai,
Berry Joseph J.,
McGehee Michael D.,
Luther Joseph M.
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202003312
Subject(s) - tandem , perovskite (structure) , photovoltaics , fabrication , materials science , photovoltaic system , halide , energy conversion efficiency , nanotechnology , optoelectronics , engineering physics , electrical engineering , engineering , medicine , inorganic chemistry , chemistry , alternative medicine , composite material , pathology , chemical engineering
Metal halide perovskites (MHPs) have transfixed the photovoltaic (PV) community due to their outstanding and tunable optoelectronic properties coupled to demonstrations of high‐power conversion efficiencies (PCE) at a range of bandgaps. This has motivated the field to push perovskites to reach the highest possible performance. One way to increase the efficiency is by fabricating multijunction solar cells, which can split the solar spectrum, reducing thermalization loss. Low‐cost all‐perovskite tandems have a real chance to soon exceed 30% PCE, which could transform the PV industry. Achieving this goal requires the identification of perovskite sub‐cells that are both highly efficient and can be effectively integrated. Herein, it is discussed how to navigate the multiple‐choice adventure in choosing between the myriad of options and considerations present when deciding what perovskite materials, contact layers, and processing tools to use. Some of the potential fabrication pitfalls often encountered in MHP based tandem PVs are highlighted, so that they can hopefully be avoided in the future.