Results 11 to 20 of about 8,966 (267)

Chemical Mapping of Excitons in Halide Double Perovskites. [PDF]

Nano Lett, 2023
Halide double perovskites are an emerging class of semiconductors with tremendous chemical and electronic diversity. While their bandstructure features can be understood from frontier-orbital models, chemical intuition for optical excitations remains incomplete. Here, we use \textit{ab initio} many-body perturbation theory within the $GW$ and the Bethe-
Biega RI, Chen Y, Filip MR, Leppert L.
europepmc   +5 more sources

Halide Pb-Free Double–Perovskites: Ternary vs. Quaternary Stoichiometry [PDF]

Energies, 2020
In view of their applicability in optoelectronics, we review here the relevant structural, electronic, and optical features of the inorganic Pb-free halide perovskite class.
Maurizia Palummo, Daniele Varsano, Eduardo Berríos, Koichi Yamashita, Giacomo Giorgi   +4 more
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Magnetizing lead-free halide double perovskites. [PDF]

Sci Adv, 2020
Alloying magnetic ions into halide double perovskites brings new opportunities for spintronics.
Ning W, Bao J, Puttisong Y, Moro F, Kobera L, Shimono S, Wang L, Ji F, Cuartero M, Kawaguchi S, Abbrent S, Ishibashi H, De Marco R, Bouianova IA, Crespo GA, Kubota Y, Brus J, Chung DY, Sun L, Chen WM, Kanatzidis MG, Gao F.   +21 more
europepmc   +7 more sources

Magnetostructural Transition in Spin Frustrated Halide Double Perovskites. [PDF]

Chem Mater
Geometrical frustration in the face-centered-cubic (fcc) lattice presents a fundamental challenge in determining antiferromagnetic order, as the ground state is highly sensitive to subtle differences in competing magnetic interactions and structural symmetry.
Mopoung K, Tao Q, Orlandi F, Mukhuti K, Ramsamoedj KS, Singh U, Khamkaeo S, Zhang M, de Dreu MW, Dilmieva E, Ammerlaan ELQN, Ottenbros T, Wiedmann S, Boothroyd AT, Christianen PCM, Simak SI, Rosen J, Gao F, Buyanova IA, Chen WM, Puttisong Y.   +20 more
europepmc   +5 more sources

Chemically Localized Resonant Excitons in Silver-Pnictogen Halide Double Perovskites. [PDF]

J Phys Chem Lett, 2021
Halide double perovskites with alternating silver and pnictogen cations are an emerging family of photoabsorber materials with robust stability and band gaps in the visible range. However, the nature of optical excitations in these systems is not yet well understood, limiting their utility.
Biega RI, Filip MR, Leppert L, Neaton JB.   +3 more
europepmc   +8 more sources

Halide Double-Perovskite Semiconductors beyond Photovoltaics

ACS Energy Letters, 2022
Halide double perovskites, A2MIMIIIX6, offer a vast chemical space for obtaining unexplored materials with exciting properties for a wide range of applications. The photovoltaic performance of halide double perovskites has been limited due to the large and/or indirect bandgap of the presently known materials.
Loreta A. Muscarella, Eline M. Hutter
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Thermochromic Lead‐Free Halide Double Perovskites [PDF]

Advanced Functional Materials, 2019
AbstractLead‐free halide double perovskites with diverse electronic structures and optical responses, as well as superior material stability show great promise for a range of optoelectronic applications. However, their large bandgaps limit their applications in the visible light range such as solar cells.
Ning, Weihua, Zhao, Xin‐Gang, Klarbring, Johan, Bai, Sai, Ji, Fuxiang, Wang, Feng, Simak, Sergei I., Tao, Youtian, Ren, Xiao‐Ming, Zhang, Lijun, Huang, Wei, Abrikosov, Igor A., Gao, Feng   +12 more
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The study of new double perovskites K2AgAsX6 (X = Cl, Br) for energy-based applications

Journal of Taibah University for Science, 2023
Halide double perovskites are the best alternative to Pb-halide perovskites. These materials play an important role in renewable energy generation. Therefore, we explore the physical properties of K2AgAsX6 (X = Cl, Br) double halide perovskites using ...
Malak Azmat Ali, Razan A. Alshgari, Aboud Ahmed Awadh Bahajjaj, Mika Sillanpää   +3 more
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Tuning Defects in a Halide Double Perovskite with Pressure

Journal of the American Chemical Society, 2022
Dopant defects in semiconductors can trap charge carriers or ionize to produce charge carriers─playing a critical role in electronic transport. Halide perovskites are a technologically important semiconductor family with a large pressure response.
Nathan R. Wolf, Adam Jaffe, Adam H. Slavney, Wendy L. Mao, Linn Leppert, Hemamala I. Karunadasa   +5 more
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Manipulation of parity and polarization through structural distortion in light-emitting halide double perovskites

Communications Materials, 2021
Halide perovskites recently attracted wide attention for light emitting applications. Here, octahedral distortion in halide double perovskites Cs2AgMCl6, induced by the mixture of trivalent M-cations Bi3+, In3+, and Sb3+, gives rise to enhanced white ...
Tamilselvan Appadurai, Ravi Kashikar, Poonam Sikarwar, Sudhadevi Antharjanam, Birabar Ranjit Kumar Nanda, Aravind Kumar Chandiran   +5 more
doaj   +1 more source