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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Band-Aligned Polymeric Hole Transport Materials for Extremely Low Energy Loss α-CsPbI3 Perovskite Nanocrystal Solar Cells
Jianyu Yuan,Xufeng Ling,Di Yang,Fangchao Li,Sijie Zhou,Junwei Shi,Yuli Qian,Jiaxin Hu,Yuansheng Sun,Yingguo Yang,Xingyu Gao,Steffen Duhm,Qiao Zhang,Wanli Ma +13 more
TL;DR: In this article, a CsPbI3 perovskite quantum dot (QD) solar cells with a remarkable efficiency approaching 13% and an extremely low energy loss of 0.45 eV by employing a series of dopant-free polymeric hole-transporting materials (HTMs).
Journal ArticleDOI
Phase Transition Control for High Performance Ruddlesden-Popper Perovskite Solar Cells
Xu Zhang,Xu Zhang,Xu Zhang,Rahim Munir,Zhuo Xu,Yucheng Liu,Hsinhan Tsai,Wanyi Nie,Jianbo Li,Tianqi Niu,Detlef-M. Smilgies,Mercouri G. Kanatzidis,Aditya D. Mohite,Kui Zhao,Aram Amassian,Shengzhong Frank Liu,Shengzhong Frank Liu +16 more
TL;DR: These insights enable to obtain high quality Ruddlesden-Popper reduced-dimensional hybrid perovskite films with preferentially perpendicular quantum well orientation, high phase purity, smooth film surface, and improved optoelectronic properties.
Journal ArticleDOI
Highly Air-Stable Carbon-Based α-CsPbI3 Perovskite Solar Cells with a Broadened Optical Spectrum
Sisi Xiang,Zhongheng Fu,Weiping Li,Ya Wei,Jiaming Liu,Huicong Liu,Liqun Zhu,Ruifeng Zhang,Haining Chen +8 more
TL;DR: In this paper, an α-Cesium lead halide perovskite (C-CsPbI3) was obtained in dry air (temperature: 20-30 °C; humidity: 10-20%).
Journal ArticleDOI
From Defects to Degradation: A Mechanistic Understanding of Degradation in Perovskite Solar Cell Devices and Modules
Sean P. Dunfield,Sean P. Dunfield,Lyle Bliss,Lyle Bliss,Fei Zhang,Joseph M. Luther,Kai Zhu,Maikel F.A.M. van Hest,Matthew O. Reese,Joseph J. Berry,Joseph J. Berry +10 more
Journal ArticleDOI
Metal Halide Perovskites in Quantum Dot Solar Cells: Progress and Prospects
Jianyu Yuan,Jianyu Yuan,Abhijit Hazarika,Abhijit Hazarika,Qian Zhao,Xufeng Ling,Taylor Moot,Wanli Ma,Joseph M. Luther +8 more
TL;DR: In this article, the development of nanoscale metal halide perovskite semiconductors has gained prominence surpassing all other QD materials in terms of efficiency, and are becoming a platform for further improving technology to solve big energy challenges.
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.