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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Facile Room‐Temperature Anion Exchange Reactions of Inorganic Perovskite Quantum Dots Enabled by a Modular Microfluidic Platform
Kameel Abdel-Latif,Robert W. Epps,Corwin B. Kerr,Christopher M. Papa,Felix N. Castellano,Milad Abolhasani +5 more
Journal ArticleDOI
Thermochemical Stability of Hybrid Halide Perovskites
Alessandro Senocrate,Alessandro Senocrate,Gee Yeong Kim,Michael Grätzel,Michael Grätzel,Joachim Maier +5 more
TL;DR: In this paper, the chemical stability of methylammonium (MA) halide perovskites (MAPbI3, MAPbBr3, and MAPbCl3) is discussed.
Journal ArticleDOI
High-efficiency perovskite quantum dot solar cells benefiting from a conjugated polymer-quantum dot bulk heterojunction connecting layer
Kang Ji,Jiabei Yuan,Fangchao Li,Yao Shi,Xufeng Ling,Xuliang Zhang,Yannan Zhang,Huiyu Lu,Jianyu Yuan,Wanli Ma +9 more
TL;DR: In this article, the authors reported an efficient and universal method to fabricate perovskite quantum dot (PQD) solar cells with enhanced efficiency through dissolving an optimal amount of conjugated polymers in a PQD matrix solution.
Journal ArticleDOI
Conversion of Single Crystalline PbI2 to CH3NH3PbI3: Structural Relations and Transformation Dynamics
Thomas M. Brenner,Yevgeny Rakita,Yonatan Orr,Eugenia Klein,Ishay Feldman,Michael Elbaum,David Cahen,Gary Hodes +7 more
TL;DR: In this article, the conversion of small, single-crystalline PbI2 crystallites to MAPbI3 by two commonly used synthesis processes: reaction with MAI in solution or as a vapor.
Journal ArticleDOI
Temperature-Dependent Thermal Decomposition Pathway of Organic–Inorganic Halide Perovskite Materials
Lin Ma,Deqiang Guo,Mengting Li,Cheng Wang,Zilin Zhou,Xin Zhao,Fangteng Zhang,Zhimin Ao,Zhaogang Nie +8 more
TL;DR: In this paper, the thermal decomposition products and kinetics of two typical organic-inorganic halide perovskites, CH3NH3PbI3 and HC(NH2)2PbII3, were investigated via simultaneous thermogravimet...
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.