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Doubling the Stakes: The Promise of Halide Double Perovskites
Angewandte Chemie International Edition, 2021AbstractWhen the stakes are doubled in a wager, a player must correctly place two consecutive bets to win, but the payout is larger. Similarly, two B sites in combination dictate the properties of A2BB′X6 (A=monocation, X=halide) double perovskites.
Nathan R. Wolf +3 more
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Epitaxial Halide Perovskite Lateral Double Heterostructure
ACS Nano, 2017Epitaxial III-V semiconductor heterostructures are key components in modern microelectronics, electro-optics, and optoelectronics. With superior semiconducting properties, halide perovskite materials are rising as promising candidates for coherent heterostructure devices. In this report, spinodal decomposition is proposed and experimentally implemented
Yiping Wang +7 more
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Entropy-Driven Stabilization of Multielement Halide Double-Perovskite Alloys
The Journal of Physical Chemistry Letters, 2022Currently, a major obstacle restricting the commercial application of halide perovskites is their low thermodynamic stability. Herein, inspired by the high-stability high-entropy alloys, we theoretically investigated a variety of multielement double-perovskite alloys. First-principles calculations show that the entropy contribution to Gibbs free energy,
Xinjiang Wang +8 more
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Lead‐Free Silver‐Bismuth Halide Double Perovskite Nanocrystals
Angewandte Chemie International Edition, 2018AbstractLead‐free perovskite nanocrystals (NCs) were obtained mainly by substituting a Pb2+ cation with a divalent cation or substituting three Pb2+ cations with two trivalent cations. The substitution of two Pb2+ cations with one monovalent Ag+ and one trivalent Bi3+ cations was used to synthesize Cs2AgBiX6 (X=Cl, Br, I) double perovskite NCs.
Bin Yang +8 more
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Unique Behavior of Halide Double Perovskites with Mixed Halogens
ACS Applied Materials & Interfaces, 2020Engineering halide double perovskite (A2M+M3+XVII6) by mixing elements is a viable way to tune its electronic and optical properties. In spite of many emerging experiments on halide double perovskite alloys, the basic electronic properties of the alloys have not been fully understood.
Dan Han +3 more
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Progress of Lead‐Free Halide Double Perovskites
Advanced Energy Materials, 2019AbstractThe field of halide metal perovskite photovoltaics has caught widespread interest in the last decade. This is seen in the rapid rise of power conversion efficiency, which is currently over 23%. It has also stimulated a widespread application of halide metal perovskites in other fields, such as light‐emitting diodes, field‐effect transistors ...
Femi Igbari +2 more
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Efficient wide band gap double cation – double halide perovskite solar cells
Journal of Materials Chemistry A, 2017We study the properties of the series of compounds Cs0.15FA0.85Pb(BrxI1−x)3, aiming to develop an efficient complementary absorber for MAPbI3 in all-perovskite tandems. A bromide content of 0.7 leads to a band gap of 2 eV and a maximum PCE of 11.5% in solar cells, among the highest reported for band gaps wider than 1.8 eV.
Dávid Forgács +7 more
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Structure Engineering of Halide Double Perovskites
Proceedings of the International Conference on Hybrid and Organic Photovoltaics, 2022Feng Wang, Fuxiang Ji, Feng Gao
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Electrical doping in halide perovskites
Nature Reviews Materials, 2021Julie Euvrard, Yanfa Yan, David B Mitzi
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Defect activity in metal halide perovskites with wide and narrow bandgap
Nature Reviews Materials, 2021Yang Zhou +2 more
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