@article{da26db11b29a47319a0e44111eb0ba73,
title = "Phase-heterojunction all-inorganic perovskite solar cells surpassing 21.5% efficiency",
abstract = "Making organic–inorganic metal halide-based multijunction perovskite solar cells either by solution processes or physical techniques is not straightforward. Here we propose and developed dimethylammonium iodide-assisted β−CsPbI3 and guanidinium iodide-assisted γ−CsPbI3 all-inorganic phase-heterojunction solar cells (PHSs) by integrating hot-air and triple-source thermal evaporation deposition techniques, respectively. Incorporating a (Zn(C6F5)2) molecular additive and dopant-free hole transport layer produces a 21.59% power conversion efficiency (PCE). The laboratory-to-module scale shows 18.43% PCE with an 18.08 cm2 active area. We demonstrate that this additive-assisted β−γ-based PHS structure exhibited >200 hours of stable performance under maximum power tracking under one sun illumination. This work paves the way towards dual deposition techniques for PHS with important consequences not only for all inorganic but also for other halide perovskite compositions.",
author = "Mali, {Sawanta S.} and Patil, {Jyoti V.} and Shao, {Jiang Yang} and Zhong, {Yu Wu} and Rondiya, {Sachin R.} and Dzade, {Nelson Y.} and Hong, {Chang Kook}",
note = "Funding Information: This research is supported by the National Research Foundation of Korea (NRF) (2020R1A2C2004880). This work was also supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2018R1A6A1A03024334). S.R.R. acknowledges the support of the Department of Materials Engineering, Indian Institute of Science (IISc), Bengaluru, India. N.Y.D. acknowledges the support of the College of Earth and Minerals Sciences and the John and Willie Leone Family Department of Energy and Mineral Engineering of Pennsylvania State University. Computer simulations for this work were performed on the Roar Supercomputer of The Pennsylvania State University. Y.-W.Z. acknowledges the funding support of the Natural Science Foundation of Beijing Municipality (2191003). We thank G. G. Jeong for helping with GIXRD measurements, from the Chonnam Center for Research Facilities (CCRF), Chonnam National University, Gwangju, and we also thank J. A. Steele from the School of Mathematics and Physics from the University of Queensland for helping with XRD analysis. Funding Information: This research is supported by the National Research Foundation of Korea (NRF) (2020R1A2C2004880). This work was also supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2018R1A6A1A03024334). S.R.R. acknowledges the support of the Department of Materials Engineering, Indian Institute of Science (IISc), Bengaluru, India. N.Y.D. acknowledges the support of the College of Earth and Minerals Sciences and the John and Willie Leone Family Department of Energy and Mineral Engineering of Pennsylvania State University. Computer simulations for this work were performed on the Roar Supercomputer of The Pennsylvania State University. Y.-W.Z. acknowledges the funding support of the Natural Science Foundation of Beijing Municipality (2191003). We thank G. G. Jeong for helping with GIXRD measurements, from the Chonnam Center for Research Facilities (CCRF), Chonnam National University, Gwangju, and we also thank J. A. Steele from the School of Mathematics and Physics from the University of Queensland for helping with XRD analysis. Publisher Copyright: {\textcopyright} 2023, The Author(s), under exclusive licence to Springer Nature Limited.",
year = "2023",
month = sep,
doi = "10.1038/s41560-023-01310-y",
language = "English (US)",
volume = "8",
pages = "989--1001",
journal = "Nature Energy",
issn = "2058-7546",
publisher = "Springer Nature",
number = "9",
}
