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Synergistic optoelectronic and thermoelectric performance in Rb<sub>2</sub>AsAuBr<sub>6</sub> and Rb<sub>2</sub>AsAuCl<sub>6</sub> double perovskites for multifunctional energy conversion. [PDF]
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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 +2 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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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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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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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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Recent Advances and Optoelectronic Applications of Lead‐Free Halide Double Perovskites
Chemistry – A European Journal, 2020AbstractOrganic–inorganic metal halide perovskites (most notably CH3NH3PbI3) have demonstrated remarkable physical attributes for photovoltaic and diverse optoelectronic applications, whereas concerns about toxicity owing to the use of lead in the chemical composition still motivate further exploration of new, nontoxic candidates.
Lei Lu +3 more
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