Journal ArticleDOI
Structural and chemical evolution of methylammonium lead halide perovskites during thermal processing from solution
David P. Nenon,Jeffrey A. Christians,Lance M. Wheeler,Jeffrey L. Blackburn,Erin M. Sanehira,Erin M. Sanehira,Benjia Dou,Benjia Dou,Michele L. Olsen,Kai Zhu,Joseph J. Berry,Joseph M. Luther +11 more
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TLDR
In this paper, the evolution of perovskites formed from targeted precursor chemistries was investigated by correlating in situ temperature-dependent X-ray diffraction, thermogravimetric analysis, and mass spectral analysis of the evolved species.Abstract:
Following the prominent success of CH3NH3PbI3 in photovoltaics and other optoelectronic applications, focus has been placed on better understanding perovskite crystallization from precursor and intermediate phases in order to facilitate improved crystallinity often desirable for advancing optoelectronic properties. Understanding of stability and degradation is also of critical importance as these materials seek commercial applications. In this study, we investigate the evolution of perovskites formed from targeted precursor chemistries by correlating in situ temperature-dependent X-ray diffraction, thermogravimetric analysis, and mass spectral analysis of the evolved species. This suite of analyses reveals important precursor composition-induced variations in the processes underpinning perovskite formation and degradation. The addition of Cl− leads to widely different precursor evolution and perovskite formation kinetics, and results in significant changes to the degradation mechanism, including suppression of crystalline PbI2 formation and modification of the thermal stability of the perovskite phase. This work highlights the role of perovskite precursor chemistry in both its formation and degradation.read more
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Metallophthalocyanine-Based Molecular Dipole Layer as a Universal and Versatile Approach to Realize Efficient and Stable Perovskite Solar Cells.
Fangchao Li,Jianyu Yuan,Xufeng Ling,Lizhen Huang,Nopporn Rujisamphan,Youyong Li,Lifeng Chi,Wanli Ma +7 more
TL;DR: The study offers a general approach to making multifunctional dipole layers, which are necessary for achieving both stable and efficient perovskite solar cells, and produces a significantly more hydrophobic surface, leading to drastically improved long-term stability under ambient conditions.
Journal ArticleDOI
Vapor deposition of metal halide perovskite thin films: Process control strategies to shape layer properties
TL;DR: In this paper, different vapor-based deposition processes have been reported to deposit perovskite thin films and the reaction chamber designs that provide an enhanced control over the deposition process are discussed.
Journal ArticleDOI
Formation Thermodynamics, Stability, and Decomposition Pathways of CsPbX3 (X = Cl, Br, I) Photovoltaic Materials
Dmitry S. Tsvetkov,Maksim Mazurin,Vladimir V. Sereda,I.L. Ivanov,Dmitry Malyshkin,Andrey Yu. Zuev +5 more
TL;DR: In this paper, the standard enthalpies of formation of CsPbX3 (X = Cl, Br, I) perovskites from halides and from elements at 298 K were measured using solution calorimetry.
Journal ArticleDOI
Thermally stable passivation toward high efficiency inverted perovskite solar cells
Robert D. J. Oliver,Yen-Hung Lin,Alex Horn,Chelsea Q. Xia,Jonathan H. Warby,Michael B. Johnston,Alexandra J. Ramadan,Henry J. Snaith +7 more
TL;DR: In this paper, a benzylammonium bromide passivation treatment was used to improve device performance, achieving the champion stabilized power output (SPO) of 19.5 % in a p-i-n device architecture.
Journal ArticleDOI
Lewis Acid–Base Interaction-Induced Porous PbI2 Film for Efficient Planar Perovskite Solar Cells
TL;DR: In this article, a planar-heterojunction perovskite solar cells with a promising power conversion efficiency of ∼18% was achieved by using 4-tert-butylpyridine (TBP) vapor treatment method.
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
Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber.
Samuel D. Stranks,Giles E. Eperon,Giulia Grancini,Christopher Menelaou,Marcelo J. P. Alcocer,Tomas Leijtens,Laura M. Herz,Annamaria Petrozza,Henry J. Snaith +8 more
TL;DR: In this article, transient absorption and photoluminescence-quenching measurements were performed to determine the electron-hole diffusion lengths, diffusion constants, and lifetimes in mixed halide and triiodide perovskite absorbers.
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 Article
Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber
Samuel D. Stranks,Giles E. Eperon,Giulia Grancini,Christopher Menelaou,Marcelo J. P. Alcocer,Tomas Leijtens,Laura M. Herz,Annamaria Petrozza,Henry J. Snaith +8 more
TL;DR: In this paper, transient absorption and photoluminescence-quenching measurements were performed to determine the electron-hole diffusion lengths, diffusion constants, and lifetimes in mixed halide and triiodide perovskite absorbers.