A mixed-cation lead mixed-halide perovskite absorber for tandem solar cells
David P. McMeekin,Golnaz Sadoughi,Waqaas Rehman,Giles E. Eperon,Michael Saliba,Maximilian T. Hörantner,Amir A. Haghighirad,Nobuya Sakai,Lars Korte,Bernd Rech,Michael B. Johnston,Laura M. Herz,Henry J. Snaith +12 more
TLDR
It is shown that using cesium ions along with formamidinium cations in lead bromide–iodide cells improved thermal and photostability and lead to high efficiency in single and tandem cells.Abstract:
Metal halide perovskite photovoltaic cells could potentially boost the efficiency of commercial silicon photovoltaic modules from ∼20 toward 30% when used in tandem architectures. An optimum perovskite cell optical band gap of ~1.75 electron volts (eV) can be achieved by varying halide composition, but to date, such materials have had poor photostability and thermal stability. Here we present a highly crystalline and compositionally photostable material, [HC(NH2)2](0.83)Cs(0.17)Pb(I(0.6)Br(0.4))3, with an optical band gap of ~1.74 eV, and we fabricated perovskite cells that reached open-circuit voltages of 1.2 volts and power conversion efficiency of over 17% on small areas and 14.7% on 0.715 cm(2) cells. By combining these perovskite cells with a 19%-efficient silicon cell, we demonstrated the feasibility of achieving >25%-efficient four-terminal tandem cells.read more
Citations
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Journal ArticleDOI
Current-Induced Phase Segregation in Mixed Halide Hybrid Perovskites and its Impact on Two-Terminal Tandem Solar Cell Design
Ian L. Braly,Ryan J. Stoddard,Adharsh Rajagopal,Alexander R. Uhl,John K. Katahara,Alex K.-Y. Jen,Hugh W. Hillhouse +6 more
TL;DR: In this article, the authors investigated the origin of phase segregation and implication for tandems with mixed halide large-bandgap (∼1.75 eV) perovskites and showed explicitly that conduction band electrons or valence band holes are the culprit behind phase segregation.
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Impact of Surfaces on Photoinduced Halide Segregation in Mixed-Halide Perovskites
Rebecca A. Belisle,Rebecca A. Belisle,Kevin A. Bush,Luca Bertoluzzi,Aryeh Gold-Parker,Aryeh Gold-Parker,Michael F. Toney,Michael D. McGehee +7 more
TL;DR: In this article, the impact of post-deposition surface modifications on photoinduced halide segregation in methylammonium lead mixed-halide perovskites was studied.
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Impact of Rubidium and Cesium Cations on the Moisture Stability of Multiple-Cation Mixed-Halide Perovskites
TL;DR: In this paper, the authors showed that the unsuitably small ionic radius of Rb+ can lead to several nonphotoactive side-products, such as RbPb2I4Br.
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Compositional and morphological engineering of mixed cation perovskite films for highly efficient planar and flexible solar cells with reduced hysteresis
Changlei Wang,Changlei Wang,Dewei Zhao,Yue Yu,Niraj Shrestha,Corey R. Grice,Wei-Qiang Liao,Alexander J. Cimaroli,Jing Chen,Randy J. Ellingson,Xingzhong Zhao,Yanfa Yan +11 more
TL;DR: In this paper, compositional and morphological engineering of mixed methylammonium (MA) and formamidinium (FA) lead triiodide (MA1−xFAxPbI3) perovskite absorber layers to produce highly efficient planar and flexible solar cells (PVSCs) with reduced hysteresis.
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Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells
Dominic Ferdani,Samuel Pering,Dibyajyoti Ghosh,Peter S. Kubiak,Alison B. Walker,Simon E. Lewis,Andrew L. Johnson,Peter J. Baker,M. Saiful Islam,Petra J. Cameron +9 more
TL;DR: In this paper, the effect of partial guanidinium substitution into methylammonium lead iodide has been investigated for mixed-cation perovskite solar cells.
References
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Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
Michael M. Lee,Joël Teuscher,Tsutomu Miyasaka,Takurou N. Murakami,Takurou N. Murakami,Henry J. Snaith +5 more
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TL;DR: A sequential deposition method for the formation of the perovskite pigment within the porous metal oxide film that greatly increases the reproducibility of their performance and allows the fabrication of solid-state mesoscopic solar cells with unprecedented power conversion efficiencies and high stability.
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Efficient planar heterojunction perovskite solar cells by vapour deposition
TL;DR: It is shown that perovskite absorbers can function at the highest efficiencies in simplified device architectures, without the need for complex nanostructures.
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Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells
TL;DR: A bilayer architecture comprising the key features of mesoscopic and planar structures obtained by a fully solution-based process is reported, providing important progress towards the understanding of the role of solution-processing in the realization of low-cost and highly efficient perovskite solar cells.
Journal ArticleDOI
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