Journal ArticleDOI
Globularity-Selected Large Molecules for a New Generation of Multication Perovskites.
Somayeh Gholipour,Somayeh Gholipour,Abdollah Morteza Ali,Juan-Pablo Correa-Baena,Silver-Hamill Turren-Cruz,Fariba Tajabadi,Wolfgang Tress,Nima Taghavinia,Michael Grätzel,Antonio Abate,Antonio Abate,Filippo De Angelis,Carlo Alberto Gaggioli,Edoardo Mosconi,Anders Hagfeldt,Michael Saliba +15 more
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TLDR
These cationic radii differ significantly from previous reports, showing that especially ethylammonium (EA) is only slightly larger than FA, which makes EA a suitable candidate for multication 3D perovskites that have potential for unexpected and beneficial properties (suppressing halide segregation, stability).Abstract:
Perovskite solar cells (PSCs) use perovskites with an APbX3 structure, where A is a monovalent cation and X is a halide such as Cl, Br, and/or I. Currently, the cations for high-efficiency PSCs are Rb, Cs, methylammonium (MA), and/or formamidinium (FA). Molecules larger than FA, such as ethylammonium (EA), guanidinium (GA), and imidazolium (IA), are usually incompatible with photoactive "black"-phase perovskites. Here, novel molecular descriptors for larger molecular cations are introduced using a "globularity factor", i.e., the discrepancy of the molecular shape and an ideal sphere. These cationic radii differ significantly from previous reports, showing that especially ethylammonium (EA) is only slightly larger than FA. This makes EA a suitable candidate for multication 3D perovskites that have potential for unexpected and beneficial properties (suppressing halide segregation, stability). This approach is tested experimentally showing that surprisingly large quantities of EA get incorporated, in contrast to most previous reports where only small quantities of larger molecular cations can be tolerated as "additives". MA/EA perovskites are characterized experimentally with a band gap ranging from 1.59 to 2.78 eV, demonstrating some of the most blue-shifted PSCs reported to date. Furthermore, one of the compositions, MA0.5 EA0.5 PbBr3 , shows an open circuit voltage of 1.58 V, which is the highest to date with a conventional PSC architecture.read more
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Journal ArticleDOI
Stabilizing halide perovskite surfaces for solar cell operation with wide-bandgap lead oxysalts.
Shuang Yang,Shuang Yang,Shangshang Chen,Edoardo Mosconi,Yanjun Fang,Yanjun Fang,Xun Xiao,Congcong Wang,Yu Zhou,Zhenhua Yu,Jingjing Zhao,Jingjing Zhao,Yongli Gao,Filippo De Angelis,Filippo De Angelis,Jinsong Huang,Jinsong Huang +16 more
TL;DR: Th Thin lead oxysalt layers passivate hybrid perovskite surfaces under an ambient atmosphere and enhance solar cell efficiency and formation of the lead oxYSalt layer increases the carrier recombination lifetime and boosts the efficiency of the solar cells to 21.1%.
Journal ArticleDOI
State of the Art and Prospects for Halide Perovskite Nanocrystals.
Amrita Dey,Junzhi Ye,Apurba De,Elke Debroye,Seung Kyun Ha,Eva Bladt,Anuraj S. Kshirsagar,Ziyu Wang,Jun Yin,Jun Yin,Yue Wang,Li Na Quan,Li Na Quan,Fei Yan,Mengyu Gao,Mengyu Gao,Xiaoming Li,Javad Shamsi,Tushar Debnath,Muhan Cao,Manuel A. Scheel,Sudhir Kumar,Julian A. Steele,Marina Gerhard,Lata Chouhan,Ke Xu,Ke Xu,Xian-Gang Wu,Yanxiu Li,Yangning Zhang,Anirban Dutta,Chuang Han,Ilka Vincon,Andrey L. Rogach,Angshuman Nag,Anunay Samanta,Brian A. Korgel,Chih-Jen Shih,Daniel R. Gamelin,Dong Hee Son,Haibo Zeng,Haizheng Zhong,Handong Sun,Hilmi Volkan Demir,Hilmi Volkan Demir,Ivan G. Scheblykin,Iván Mora-Seró,Jacek K. Stolarczyk,Jin Z. Zhang,Jochen Feldmann,Johan Hofkens,Johan Hofkens,Joseph M. Luther,Julia Pérez-Prieto,Liang Li,Liberato Manna,Maryna I. Bodnarchuk,Maryna I. Bodnarchuk,Maksym V. Kovalenko,Maksym V. Kovalenko,Maarten B. J. Roeffaers,Narayan Pradhan,Omar F. Mohammed,Osman M. Bakr,Peidong Yang,Peter Müller-Buschbaum,Prashant V. Kamat,Qiaoliang Bao,Qiao Zhang,Roman Krahne,Raquel E. Galian,Samuel D. Stranks,Sara Bals,Vasudevanpillai Biju,William A. Tisdale,Yong Yan,Robert L. Z. Hoye,Lakshminarayana Polavarapu,Lakshminarayana Polavarapu +78 more
TL;DR: A comprehensive review of metal-halide perovskite nanocrystals can be found in this article, where researchers having expertise in different fields (chemistry, physics, and device engineering) have joined together to provide a state-of-the-art overview and future prospects of metalhalide nanocrystal research.
Journal ArticleDOI
Highly stable, phase pure Cs2AgBiBr6 double perovskite thin films for optoelectronic applications
TL;DR: In this paper, double perovskites have been suggested as an alternative and, especially, Cs2AgBiX6 has proved to be a promising material as it is non-toxic and highly stable.
Journal ArticleDOI
Large guanidinium cation mixed with methylammonium in lead iodide perovskites for 19% efficient solar cells
Alexander D. Jodlowski,Alexander D. Jodlowski,Cristina Roldán-Carmona,Giulia Grancini,Manuel Salado,Maryline Ralaiarisoa,Maryline Ralaiarisoa,Shahzada Ahmad,Norbert Koch,Norbert Koch,Luis Camacho,Gustavo de Miguel,Mohammad Khaja Nazeeruddin +12 more
TL;DR: In this paper, a large organic cation, guanidinium, was incorporated into the MAPbI3 crystal structure, which achieved improved material stability after the incorporation of the organic component.
Journal ArticleDOI
The 2D Halide Perovskite Rulebook: How the Spacer Influences Everything from the Structure to Optoelectronic Device Efficiency.
TL;DR: In this paper, the authors provide guidelines on successfully choosing spacers and incorporating them into crystalline materials and optoelectronic devices and provide a summary of various synthetic methods to act as a tutorial for groups interested in pursuing synthesis of novel 2D halide perovskites.
References
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Journal ArticleDOI
Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut
Loredana Protesescu,Loredana Protesescu,Sergii Yakunin,Sergii Yakunin,Maryna I. Bodnarchuk,Maryna I. Bodnarchuk,Franziska Krieg,Franziska Krieg,Riccarda Caputo,Christopher H. Hendon,Ruo Xi Yang,Aron Walsh,Maksym V. Kovalenko,Maksym V. Kovalenko +13 more
TL;DR: The compelling combination of enhanced optical properties and chemical robustness makes CsPbX3 nanocrystals appealing for optoelectronic applications, particularly for blue and green spectral regions (410–530 nm), where typical metal chalcogenide-based quantum dots suffer from photodegradation.
Journal ArticleDOI
The emergence of perovskite solar cells
TL;DR: In this article, a review describes the rapid progress that has been made in hybrid organic-inorganic perovskite solar cells and their applications in the photovoltaic sector.
Journal ArticleDOI
Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency
Michael Saliba,Taisuke Matsui,Ji-Youn Seo,Konrad Domanski,Juan-Pablo Correa-Baena,Mohammad Khaja Nazeeruddin,Shaik M. Zakeeruddin,Wolfgang Tress,Antonio Abate,Anders Hagfeldt,Michael Grätzel +10 more
TL;DR: In this paper, the triple cation perovskite photovoltaics with inorganic cesium were shown to be thermally more stable, contain less phase impurities and are less sensitive to processing conditions.
Journal ArticleDOI
Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells
Giles E. Eperon,Samuel D. Stranks,Christopher Menelaou,Michael B. Johnston,Laura M. Herz,Henry J. Snaith +5 more
TL;DR: In this article, the effect of replacing the methylammonium cation in this perovskite was explored, and it was shown that with the slightly larger formamidinium lead trihalide cation, one can synthesise a peroviscite with a bandgap tunable between 1.48 and 2.23 eV.
Journal ArticleDOI
Incorporation of rubidium cations into perovskite solar cells improves photovoltaic performance
Michael Saliba,Taisuke Matsui,Taisuke Matsui,Konrad Domanski,Ji-Youn Seo,Amita Ummadisingu,Shaik M. Zakeeruddin,Juan-Pablo Correa-Baena,Wolfgang Tress,Antonio Abate,Anders Hagfeldt,Michael Grätzel +11 more
TL;DR: This work shows that the small and oxidation-stable rubidium cation (Rb+) can be embedded into a “cation cascade” to create perovskite materials with excellent material properties and achieved stabilized efficiencies of up to 21.6% on small areas.