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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Perowskit-Solarzellen: atomare Ebene, Schichtqualität und Leistungsfähigkeit der Zellen
Michael Saliba,Michael Saliba,Juan-Pablo Correa-Baena,Michael Grätzel,Anders Hagfeldt,Antonio Abate +5 more
TL;DR: The perovskite solar cells (PSCs) have made tremendous progress in recent years due to exceptional material properties such as high panchromatic absorption, charge carrier diffusion length and a sharp optical band edge.
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Additive effects of alkali metals on Cu-modified CH3NH3PbI3−δClδ photovoltaic devices
TL;DR: In this paper, the authors investigated the addition of alkali metal elements (namely Na+, K+, Rb+, and Cs+) to Cu-modified CH3NH3PbI3−δClδ photovoltaic devices.
Journal ArticleDOI
Polarons and Charge Localization in Metal-Halide Semiconductors for Photovoltaic and Light-Emitting Devices.
TL;DR: The role of charge-lattice interactions and polaron formation in a wide range of promising materials, including perovskites, double perovsites, Ruddlesden-Popper layered perovskiy structures, nanocrystals, vacancy-ordered, and other novel structures, is summarized in this paper.
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Cation Alloying Delocalizes Polarons in Lead Halide Perovskites.
Liujiang Zhou,Claudine Katan,Wanyi Nie,Hsinhan Tsai,Laurent Pedesseau,Jared Crochet,Jacky Even,Aditya D. Mohite,Sergei Tretiak,Amanda Neukirch +9 more
TL;DR: The simulations show that Cs, formamidinium (FA), and MA mixtures can effectively minimize polaron binding energy while weakly affecting band gap, in a good agreement with experimental findings.
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
TL;DR: A low-cost, solution-processable solar cell, based on a highly crystalline perovskite absorber with intense visible to near-infrared absorptivity, that has a power conversion efficiency of 10.9% in a single-junction device under simulated full sunlight is reported.
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Sequential deposition as a route to high-performance perovskite-sensitized solar cells
Julian Burschka,Norman Pellet,Norman Pellet,Soo-Jin Moon,Robin Humphry-Baker,Peng Gao,Mohammad Khaja Nazeeruddin,Michael Grätzel +7 more
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.
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The emergence of perovskite solar cells
TL;DR: In this article, a review describes the rapid progress that has been made in hybrid organic-inorganic perovskite solar cells and their applications in the photovoltaic sector.