Results 31 to 40 of about 15,692 (288)

Orbital ordering in frustrated Jahn-Teller systems [PDF]

open access: yes, 2002
We consider the superexchange in `frustrated' Jahn-Teller systems, such as the transition metal oxides NaNiO_2, LiNiO_2, and ZnMn_2O_4, in which transition metal ions with doubly degenerate orbitals form a triangular or pyrochlore lattice and are ...
A. P. Ramirez   +9 more
core   +4 more sources

Recent Progress of Layered Perovskite Solar Cells Incorporating Aromatic Spacers

open access: yesNano-Micro Letters, 2023
Highlights Layered two-dimensional (2D) perovskites are emerging photovoltaic materials with superior structural and environmental stability. Aromatic spacers offer unique advantages over aliphatic spacers, including higher dielectric constants, better ...
Yuping Gao, Xiyue Dong, Yongsheng Liu
doaj   +1 more source

Rewritable High-Mobility Electrons in Oxide Heterostructure of Layered Perovskite/Perovskite

open access: yesACS Applied Materials & Interfaces, 2021
Perovskite oxide SrTiO3 can be electron-doped and exhibits high mobility by introducing oxygen vacancies or dopants such as Nb or La. A reversible after-growth tuning of high mobility carriers in SrTiO3 is highly desired for the applications in high-speed electronic devices.
Xiaofeng Chen   +12 more
openaire   +4 more sources

Ruddlesden-Popper Phase in Two-Dimensional Inorganic Halide Perovskites: A Plausible Model and the Supporting Observations. [PDF]

open access: yes, 2017
A Ruddlesden-Popper (RP) type structure is well-known in oxide perovskites and is related to many interesting properties such as superconductivity and ferroelectricity.
Yang, Peidong, Yu, Yi, Zhang, Dandan
core   +1 more source

Layered metal halide perovskite solar cells: A review from structure‐properties perspective towards maximization of their performance and stability

open access: yesEcoMat, 2021
Perovskite solar cells (PSCs) technology is now reaching its full potential in terms of power conversion efficiency, but still presenting problems related to long‐term stability under operating conditions.
Matheus S. deHolanda   +4 more
doaj   +1 more source

Intercalation-driven ferroelectric-to-ferroelastic conversion in a layered hybrid perovskite crystal

open access: yesNature Communications, 2022
There are few examples of tunable ferroic orders in two-dimensional layered hybrid perovskites. Here, the authors demonstrate tunable ferroic orders from ferroelectricity to ferroelasticity in such system by intercalation chemistry.
Zhenyue Wu   +11 more
doaj   +1 more source

Layered structures of organic/inorganic hybrid halide perovskites

open access: yes, 2016
Organic-inorganic hybrid halide perovskites, in which the A cations of an ABX$_3$ perovskite are replaced by organic cations, may be used for photovoltaic and solar thermoelectric applications.
Huan, Tran Doan   +2 more
core   +1 more source

Recipes for improper ferroelectricity in molecular perovskites

open access: yesNature Communications, 2018
In layered inorganic materials lattice distortions can couple to break inversion symmetry and drive improper ferroelectricity, but in perovskites, symmetry prohibits such an effect.
Hanna L. B. Boström   +2 more
doaj   +1 more source

Low-dimensional hybrid perovskites containing an organic cation with an extended conjugated system : tuning the excitonic absorption features

open access: yes, 2019
Low-dimensional hybrid perovskites are receiving increased attention. One of the advantages of the low-dimensional hybrids over their 3D counterparts is their greater structural flexibility towards the incorporation of bigger, more complex, organic ...
D'Haen, Jan   +6 more
core   +1 more source

Novel Pr-Doped BaLaInO4 Ceramic Material with Layered Structure for Proton-Conducting Electrochemical Devices

open access: yesApplied Sciences, 2023
One of the urgent tasks of applied materials science is the creation of novel high-effective materials with target properties. In the area of energy systems, there is a problem in the conversion of chemical energy to electricity without mechanical work ...
Nataliia Tarasova   +2 more
doaj   +1 more source

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