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
Reads0
Chats0
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
Citations
More filters
Journal ArticleDOI
Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics.
Abhishek Swarnkar,Abhishek Swarnkar,Ashley R. Marshall,Ashley R. Marshall,Erin M. Sanehira,Erin M. Sanehira,Boris D. Chernomordik,David T. Moore,Jeffrey A. Christians,Tamoghna Chakrabarti,Joseph M. Luther +10 more
TL;DR: N nanoscale phase stabilization of CsPbI3 quantum dots (QDs) to low temperatures that can be used as the active component of efficient optoelectronic devices and describe the formation of α-CsP bI3 QD films that are phase-stable for months in ambient air.
Journal ArticleDOI
Intriguing Optoelectronic Properties of Metal Halide Perovskites
TL;DR: This review is a critical account of the interrelation between MHP electronic structure, absorption, emission, carrier dynamics and transport, and other relevant photophysical processes that have propelled these materials to the forefront of modern optoelectronics research.
Journal ArticleDOI
Tailored interfaces of unencapsulated perovskite solar cells for >1,000 hour operational stability
Jeffrey A. Christians,Philip Schulz,Jonathan S. Tinkham,Tracy H. Schloemer,Steven P. Harvey,Bertrand J. Tremolet de Villers,Alan Sellinger,Alan Sellinger,Joseph J. Berry,Joseph M. Luther +9 more
TL;DR: The perovskite absorber material itself has been heavily scrutinized for being prone to degradation by water, oxygen and ultraviolet light as discussed by the authors, and it has been shown that even under the combined stresses of light (including ultraviolet light), oxygen and moisture, perovsite solar cells can retain 94% of peak efficiency despite 1,000 hours of continuous unencapsulated operation in ambient air conditions (relative humidity of 10-20%).
Journal ArticleDOI
Stable high efficiency two-dimensional perovskite solar cells via cesium doping
Xu Zhang,Xu Zhang,Xu Zhang,Xiaodong Ren,Bin Liu,Rahim Munir,Xuejie Zhu,Dong Yang,Jianbo Li,Yucheng Liu,Detlef-M. Smilgies,Ruipeng Li,Zhou Yang,Tianqi Niu,Xiuli Wang,Aram Amassian,Kui Zhao,Shengzhong Liu,Shengzhong Liu +18 more
TL;DR: In this paper, the authors demonstrate cesium cation (Cs+) doped 2D (BA)2(MA)3Pb4I13 perovskite solar cells giving a power conversion efficiency (PCE) as high as 13.7%.
Journal ArticleDOI
Thermal degradation of CH3NH3PbI3 perovskite into NH3 and CH3I gases observed by coupled thermogravimetry–mass spectrometry analysis
TL;DR: In this paper, a thermal gravimetric and differential thermal analysis (TG-DTA) coupled with quadrupole mass spectrometry (MS) and first principles calculations were employed to elucidate the chemical nature of released gases during the thermal decomposition of CH3NH3PbI3.
References
More filters
Journal ArticleDOI
Reproducible Fabrication of Efficient Perovskite-based Solar Cells: X-ray Crystallographic Studies on the Formation of CH3NH3PbI3 Layers
Atsushi Wakamiya,Atsushi Wakamiya,Masaru Endo,Takahiro Sasamori,Norihiro Tokitoh,Yuhei Ogomi,Shuzi Hayase,Yasujiro Murata +7 more
TL;DR: In this paper, lead halide complexes formed during the fabrication of perovskite (CH3NH3PbI3)-based solar cells were examined by single-crystal X-ray diffraction analysis.
Journal ArticleDOI
Chloride in lead chloride-derived organo-metal halides for perovskite-absorber solar cells
Eva L. Unger,Andrea R. Bowring,Christopher J. Tassone,Vanessa L. Pool,Aryeh Gold-Parker,Rongrong Cheacharoen,Kevin H. Stone,Eric T. Hoke,Michael F. Toney,Michael D. McGehee +9 more
TL;DR: In this paper, the role of chlorine in solution-processed samples utilizing lead chloride and 3 equiv of methylammonium iodide to prepare the perovskite samples was investigated.
Journal ArticleDOI
Solution Chemistry Engineering toward High-Efficiency Perovskite Solar Cells.
Yixin Zhao,Kai Zhu +1 more
TL;DR: Recent progress on solution chemistry engineering processes and various control parameters that are critical to the success of solution growth of high-quality perovskite films are reviewed.
Journal ArticleDOI
Abnormal crystal growth in CH3NH3PbI3−xClx using a multi-cycle solution coating process
TL;DR: In this article, the authors reported that adding Cl containing precursor for mixed halide perovskite formation can induce the abnormal grain growth behavior that yields well-oriented grains accompanied by the appearance of some very large size grains.
Journal ArticleDOI
Influence of thermal processing protocol upon the crystallization and photovoltaic performance of organic–inorganic lead trihalide perovskites
Michael Saliba,Kwan Wee Tan,Hiroaki Sai,David T. Moore,Trent Scott,Wei Zhang,Lara A. Estroff,Ulrich Wiesner,Henry J. Snaith +8 more
TL;DR: In this article, the thermally induced morphological and crystalline development of methylammonium lead mixed halide perovskite (CH3NH3PbI3-xClx) thin films and photovoltaic device performance with meso-superstructured and planar heterojunction architectures were investigated.