Journal ArticleDOI
Influence of the Synthetic Procedures on the Structural and Optical Properties of Mixed-Halide (Br, I) Perovskite Films
Paolo Fedeli,Francesco Gazza,Davide Calestani,Patrizia Ferro,Tullo Besagni,Andrea Zappettini,Gianluca Calestani,Enrico Marchi,Paola Ceroni,Roberto Mosca +9 more
TLDR
In this paper, the influence of thermal treatments on the properties of mixed bromide-iodide organolead perovskites (MAPbI3-xBrx, MA = CH3NH3) is investigated in films prepared in air by single-step solution processes based on different precursor solutions.Abstract:
The influence of thermal treatments on the properties of mixed bromide–iodide organolead perovskites (MAPbI3–xBrx, MA = CH3NH3) is investigated in films prepared in air by single-step solution processes based on different precursor solutions. Initially, the bandgap energy (EG) dependence on composition is reconsidered on films obtained by mixtures of trihalide solutions. An EG(x) relation is obtained that is expected to be independent of the film properties and can be used to assess perovskite composition. In these samples, recombination centers are observed whose energy depth increases with x, likely involving the simultaneous presence of iodide and bromide, while the Urbach energy increases with the grain surface-to-volume ratio, which points out that the defects giving sub-bandgap absorption originate from grain boundaries. Trihalide mixtures allow perovskite synthetic processes suitable for solar cell production, being fast and reproducible. A slight MABr excess in the solution made of MABr and PbI2 g...read more
Citations
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Journal ArticleDOI
Stability of Perovskite Solar Cells: A Prospective on the Substitution of the A Cation and X Anion.
TL;DR: The current state-of-the-art and recent advances in improving the chemical stability of perovskite materials by substitution of the A-cation and X-anion are highlighted.
Journal ArticleDOI
Progress on Perovskite Materials and Solar Cells with Mixed Cations and Halide Anions
TL;DR: The recent progress on the synthesis and fundamental aspects of mixed cation and halide perovskites correlating with device performance, long-term stability, and hysteresis are reviewed.
Journal ArticleDOI
High-performance direct conversion X-ray detectors based on sintered hybrid lead triiodide perovskite wafers
Shreetu Shrestha,Rene Fischer,Gebhard J. Matt,Patrick Feldner,Thilo Michel,Andres Osvet,Ievgen Levchuk,Benoit Merle,Saeedeh Golkar,Haiwei Chen,Sandro Francesco Tedde,Oliver Schmidt,Rainer Hock,Manfred Rührig,Mathias Göken,Wolfgang Heiss,Gisela Anton,Christoph J. Brabec +17 more
TL;DR: Methyl ammonium lead triiodide perovskite wafers for application in direct conversion X-ray detectors are fabricated by a room-temperature sintering process.
Journal ArticleDOI
Heterovalent Dopant Incorporation for Bandgap and Type Engineering of Perovskite Crystals
Ahmed L. Abdelhady,Ahmed L. Abdelhady,Makhsud I. Saidaminov,Banavoth Murali,Valerio Adinolfi,Oleksandr Voznyy,Khabiboulakh Katsiev,Erkki Alarousu,Riccardo Comin,Ibrahim Dursun,Lutfan Sinatra,Edward H. Sargent,Omar F. Mohammed,Osman M. Bakr +13 more
TL;DR: This work demonstrates the successful incorporation of dopants into perovskite crystals while preserving the host lattice structure, opening new avenues to tailor the electronic and optoelectronic properties of this rapidly emerging class of solution-processed semiconductors.
Journal ArticleDOI
Impact of H2O on organic–inorganic hybrid perovskite solar cells
TL;DR: A comprehensive review on the effect of water on the state-of-the-art lead-based perovskite solar cells is provided in this paper, where it is shown that a moderate amount of water can facilitate nucleation and crystallization of the perovsite material, resulting in better perov-skite film quality and enhanced PSC performance.
References
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Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%
Hui-Seon Kim,Chang-Ryul Lee,Jeong-Hyeok Im,Ki Beom Lee,Thomas Moehl,Arianna Marchioro,Soo-Jin Moon,Robin Humphry-Baker,Jun-Ho Yum,Jacques-E. Moser,Michael Grätzel,Nam-Gyu Park +11 more
TL;DR: The use of a solid hole conductor dramatically improved the device stability compared to (CH3NH3)PbI3 -sensitized liquid junction cells.
Journal ArticleDOI
Interface engineering of highly efficient perovskite solar cells
Huanping Zhou,Qi Chen,Gang Li,Song Luo,Tze Bing Song,Hsin Sheng Duan,Ziruo Hong,Jingbi You,Yongsheng Liu,Yang Yang +9 more
TL;DR: Perovskite films received a boost in photovoltaic efficiency through controlled formation of charge-generating films and improved current transfer to the electrodes and low-temperature processing steps allowed the use of materials that draw current out of the perovskites layer more efficiently.