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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Chiral Perovskites: Promising Materials toward Next-Generation Optoelectronics.
TL;DR: Recent advances in such an emerging field regarding the design and construction of chiral perovskite materials, along with their optoelectronic performances are summarized and an outlook of future challenges as well as the potential significance of the chiralperovskites family on the optical communication is proposed.
Journal ArticleDOI
Tunable Polaron Distortions Control the Extent of Halide Demixing in Lead Halide Perovskites
Connor G. Bischak,Andrew B. Wong,Elbert Lin,David T. Limmer,David T. Limmer,Peidong Yang,Naomi S. Ginsberg +6 more
TL;DR: This work investigates the nanoscale photoinduced behavior of single-crystal mixed Br-/I- methylammonium (MA+) lead halide perovskite (MAPb(Br xI1- x)3) nanoplates, finding that phase separation occurs, resulting in I--rich clusters that are nucleated stochastically and stabilized by polarons.
Journal ArticleDOI
Unraveling exciton–phonon coupling in individual FAPbI3 nanocrystals emitting near-infrared single photons
Ming Fu,Philippe Tamarat,Philippe Tamarat,Jean-Baptiste Trebbia,Jean-Baptiste Trebbia,Maryna I. Bodnarchuk,Maksym V. Kovalenko,Maksym V. Kovalenko,Jacky Even,Brahim Lounis,Brahim Lounis +10 more
TL;DR: Spectroscopic investigations of individual Formamidinium lead iodide nanocrystals are performed, demonstrating single-photon emission and unravel the mechanisms of carrier–phonon interactions, which will guide the development of next-generation devices for photovoltaics and quantum technologies.
Journal ArticleDOI
2D/3D Heterostructure for Semitransparent Perovskite Solar Cells with Engineered Bandgap Enables Efficiencies Exceeding 25% in Four‐Terminal Tandems with Silicon and CIGS
Saba Gharibzadeh,Ihteaz M. Hossain,Paul Fassl,Bahram Abdollahi Nejand,Tobias Abzieher,Moritz Schultes,Erik Ahlswede,Philip Jackson,Michael Powalla,Sören Schäfer,Michael Rienäcker,Tobias Wietler,Robby Peibst,Uli Lemmer,Bryce S. Richards,Ulrich W. Paetzold +15 more
TL;DR: In this paper, a 2D/3D perovskite heterostructure passivation is employed for double-cation wide-bandgap PSCs with engineered bandgap, which results in improved stabilized PCEs and a strong enhancement in open-circuit voltages of around 45 mV compared to reference devices for all investigated bandgaps.
Journal ArticleDOI
Review on recent progress of lead-free halide perovskites in optoelectronic applications
TL;DR: In this paper, the authors summarized the recent advancement of various LFHP materials and their applications in photovoltaics, light-emitting diodes (LEDs), photodetectors and other devices.
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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Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells
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