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
Band Gap Tuning via Lattice Contraction and Octahedral Tilting in Perovskite Materials for Photovoltaics.
Rohit Prasanna,Aryeh Gold-Parker,Aryeh Gold-Parker,Tomas Leijtens,Bert Conings,Aslihan Babayigit,Hans-Gerd Boyen,Michael F. Toney,Michael D. McGehee +8 more
TL;DR: A strategy to systematically tune the band gap and valence and conduction band positions of metal halide perovskites through control of the cation composition is outlined, demonstrating solar cells that harvest light in the infrared up to 1040 nm, and showing promise for improvements of the bottom cell of all-perovskite tandem solar cells.
Journal ArticleDOI
Origin of Reversible Photoinduced Phase Separation in Hybrid Perovskites.
Connor G. Bischak,Craig L. Hetherington,Hao Wu,Shaul Aloni,D. Frank Ogletree,David T. Limmer,Naomi S. Ginsberg +6 more
TL;DR: It is proposed that the localized strain induced by a single photoexcited charge interacting with the soft, ionic lattice is sufficient to promote halide phase separation and nucleate a light-stabilized, low-bandgap, ∼8 nm iodide-rich cluster.
Journal ArticleDOI
Efficient tandem solar cells with solution-processed perovskite on textured crystalline silicon.
Yi Hou,Erkan Aydin,Michele De Bastiani,Chuanxiao Xiao,Furkan Halis Isikgor,Ding-Jiang Xue,Bin Chen,Hao Chen,Behzad Bahrami,Ashraful Haider Chowdhury,Andrew Johnston,Se-Woong Baek,Ziru Huang,Mingyang Wei,Yitong Dong,Joel Troughton,Rawan Jalmood,Alessandro J. Mirabelli,Thomas Allen,Emmanuel Van Kerschaver,Makhsud I. Saidaminov,Derya Baran,Qiquan Qiao,Kai Zhu,Stefaan De Wolf,Edward H. Sargent +25 more
TL;DR: Tandems that combine solution-processed micrometer-thick perovskite top cells with fully textured silicon heterojunction bottom cells are reported, which presents the possibility of overcoming the single-junction Shockley-Queisser limit in photovoltaics.
Journal ArticleDOI
Photovoltaic mixed-cation lead mixed-halide perovskites: links between crystallinity, photo-stability and electronic properties
Waqaas Rehman,David P. McMeekin,Jay B. Patel,Rebecca L. Milot,Michael B. Johnston,Henry J. Snaith,Laura M. Herz +6 more
TL;DR: In this paper, the authors show that high crystalline quality is a prerequisite for good optoelectronic quality and band gap stability of mixed-cation lead mixed-halide perovskite CsyFA (1−y)Pb(BrxI(1−x))3.
Journal ArticleDOI
Potassium Incorporation for Enhanced Performance and Stability of Fully Inorganic Cesium Lead Halide Perovskite Solar Cells
Jae Keun Nam,Sung Uk Chai,Wonhee Cha,Y. Choi,Wanjung Kim,Myung Sun Jung,Jeong Kwon,Dongho Kim,Jong Hyeok Park +8 more
TL;DR: In this paper, a planar-architecture perovskite solar cell with a power conversion efficiency of 10.0% has been proposed for next-generation photovoltaics.
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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Journal ArticleDOI
Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells
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Journal ArticleDOI
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