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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15.3%-Efficient GaAsP Solar Cells on GaP/Si Templates
Michelle Vaisman,Michelle Vaisman,Shizhao Fan,Kevin Nay Yaung,Emmett E. Perl,Diego Martín-Martín,Zhengshan Jason Yu,Mehdi Leilaeioun,Zachary C. Holman,Minjoo Larry Lee +9 more
TL;DR: In this article, the authors demonstrate a 15.3-efficient 1.7 eV GaAsP top cell on GaP/Si, enabled by recent advances in material quality in conjunction with an improved device design and a high-performance antireflection coating.
Journal ArticleDOI
Crystallization tailoring of cesium/formamidinium double-cation perovskite for efficient and highly stable solar cells
Jianchao Yang,Yu Chen,Weijian Tang,Shubo Wang,Qingshan Ma,Yihui Wu,Ningyi Yuan,Jianning Ding,Wen-Hua Zhang +8 more
TL;DR: In this article, a facile but effective strategy has been developed to finely tailor the crystallization of thermally stable cesium/formamidinium (Cs/FA) based perovskite via partially replacing PbI2 with PbCl2 in the precursor solution.
Journal ArticleDOI
Simple post annealing-free method for fabricating uniform, large grain-sized, and highly crystalline perovskite films
TL;DR: In this article, a simple post annealing-free (PAF) method for making uniform, large grain-sized, and highly crystalline triple cation perovskite films was reported.
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Extended Absorption Window and Improved Stability of Cesium-Based Triple-Cation Perovskite Solar Cells Passivated with Perfluorinated Organics
K. M. Muhammed Salim,Teck Ming Koh,D. Bahulayan,Padinhare Cholakkal Harikesh,Nur Fadilah Jamaludin,Benny Febriansyah,Annalisa Bruno,Subodh Mhaisalkar,Nripan Mathews +8 more
TL;DR: In this article, the perovskite surface was passivated with a hydrophobic fluorinated organic salt, namely, pentafluoropropylamonium iodide (PFPAI), which not only narrowed the band gap but also contributed toward the modulation of surface and electronic properties of the resulting film.
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Advancing Tin Halide Perovskites: Strategies toward the ASnX3 Paradigm for Efficient and Durable Optoelectronics
TL;DR: In this article, the lead-based perovskites (Pb-PVSKs) were investigated and various less-toxic sub-problems were identified.
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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