Results 11 to 20 of about 8,802 (281)

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
doaj   +4 more sources

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

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   +6 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

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
  +6 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
openaire   +4 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   +4 more sources

Halide Double Perovskite Ferroelectrics

Angewandte Chemie, 2020
AbstractHalide double perovskites have recently emerged as a promising environmentally friendly optoelectronic and photovoltaic material for their inherent thermodynamic stability, high defect tolerance, and appropriate band gaps. However, to date, no ferroelectric material based on halide double perovskites has been discovered.
Weichuan Zhang, Maochun Hong, Junhua Luo
openaire   +3 more sources

Two-Dimensional Halide Pb-Perovskite–Double Perovskite Epitaxial Heterostructures

Journal of the American Chemical Society, 2023
Epitaxial heterostructures of two-dimensional (2D) halide perovskites offer a new platform for studying intriguing structural, optical, and electronic properties. However, difficulties with the stability of Pb- and Sn-based heterostructures have repeatedly slowed the progress.
Singh, Ajeet, Yuan, Biao, Rahman, Md. Habibur, Yang, Hanjun, De, Angana, Park, Jee Yung, Zhang, Shuchen, Huang, Libai, Mannodi-Kanakkithodi, Arun, Pennycook, Timothy J., Dou, Letian   +10 more
openaire   +3 more sources

The Emergence of Halide Layered Double Perovskites [PDF]

ACS Energy Letters, 2020
Halide double perovskites have allowed the significant expansion of the possible metals and oxidation states in halide perovskites.
Brenda Vargas, Germán Rodrı́guez-López, Diego Solis-Ibarra   +2 more
openaire   +1 more source