Journal ArticleDOI
Inorganic Rubidium Cation as an Enhancer for Photovoltaic Performance and Moisture Stability of HC(NH2)2PbI3 Perovskite Solar Cells
Yun Hee Park,Yun Hee Park,Inyoung Jeong,Inyoung Jeong,Seunghwan Bae,Hae Jung Son,Phillip Lee,Jinwoo Lee,Chul Ho Lee,Min Jae Ko,Min Jae Ko +10 more
TLDR
In this paper, the authors proposed an inorganic-organic mixed cation system to enhance moisture-tolerance and photovoltaic performances of formamidinium lead iodide (FAPbI3).Abstract:
Perovskite solar cells (PSCs) based on organic monovalent cation (methylammonium or formamidinium) have shown excellent optoelectronic properties with high efficiencies above 22%, threatening the status of silicon solar cells. However, critical issues of long-term stability have to be solved for commercialization. The severe weakness of the state-of-the-art PSCs against moisture originates mainly from the hygroscopic organic cations. Here, rubidium (Rb) is suggested as a promising candidate for an inorganic–organic mixed cation system to enhance moisture-tolerance and photovoltaic performances of formamidinium lead iodide (FAPbI3). Partial incorporation of Rb in FAPbI3 tunes the tolerance factor and stabilizes the photoactive perovskite structure. Phase conversion from hexagonal yellow FAPbI3 to trigonal black FAPbI3 becomes favored when Rb is introduced. The authors find that the absorbance and fluorescence lifetime of 5% Rb-incorporated FAPbI3 (Rb0.05FA0.95PbI3) are enhanced than bare FAPbI3. Rb0.05FA0.95PbI3-based PSCs exhibit a best power conversion efficiency of 17.16%, which is much higher than that of the FAPbI3 device (13.56%). Moreover, it is demonstrated that the Rb0.05FA0.95PbI3 film shows superior stability against high humidity (85%) and the full device made with the mixed perovskite exhibits remarkable long-term stability under ambient condition without encapsulation, retaining the high performance for 1000 h.read more
Citations
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Journal ArticleDOI
Low‐Dimensional Perovskites: From Synthesis to Stability in Perovskite Solar Cells
Journal ArticleDOI
Simultaneous Cesium and Acetate Coalloying Improves Efficiency and Stability of FA0.85MA0.15PbI3 Perovskite Solar Cell with an Efficiency of 21.95
Shihao Yuan,Yuan Cai,Shaomin Yang,Huan Zhao,Fang Qian,Yu Han,Jie Sun,Zhike Liu,Shengzhong (Frank) Liu +8 more
Journal ArticleDOI
Cation influence on carrier dynamics in perovskite solar cells
Ankur Solanki,Pankaj Yadav,Silver-Hamill Turren-Cruz,Swee Sien Lim,Michael Saliba,Tze Chien Sum +5 more
TL;DR: In this paper, the influence of Rb+ and Cs+ on the carrier dynamics using transient optical spectroscopy and correlate with solar cell performance is systematically investigated and the underlying mechanisms behind the synergistic combination of cations to minimize the charge carrier losses and achieve high efficiency perovskite solar cells.
Journal ArticleDOI
Metal Cations in Efficient Perovskite Solar Cells: Progress and Perspective.
Kai Wang,Waqas Siddique Subhani,Yulong Wang,Xiaokun Zuo,Hui Wang,Duan Lianjie,Shengzhong Frank Liu,Shengzhong Frank Liu +7 more
TL;DR: The progress of research into metal cations for PVSCs is discussed by focusing on the position of the cations in perovskites, the modulation of the film quality, and the influence on the photovoltaic performance.
Journal ArticleDOI
Dual effect of humidity on cesium lead bromide: enhancement and degradation of perovskite films
Diego Di Girolamo,M. Ibrahim Dar,Danilo Dini,Lorenzo Gontrani,Ruggero Caminiti,Alessandro Mattoni,Michael Graetzel,Simone Meloni +7 more
TL;DR: In this paper, the effect of post-deposition treatment under controlled humidity on CsPbBr3 perovskite films was investigated by in situ X-ray diffraction and ex situ scanning electron microscopy, UV-visible spectroscopy and photoluminescence.
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.
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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.