Results 31 to 40 of about 39,642 (326)

Structural changes and band gap tunability with incorporation of n-butylammonium iodide in perovskite thin film

open access: yesHeliyon, 2020
The current work presents structural change and band gap tunability using hybrid organic-inorganic perovskite with the incorporation of long chain ammonium halide.
Leong Wei Xian Rebecca   +3 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

A New Iron Pnictide Oxide (Fe2As2)(Ca5(Mg,Ti)4Oy) and a New Phase in Fe-As-Ca-Mg-Ti-O system

open access: yes, 2012
A new layered iron arsenide oxide (Fe2As2)(Ca5(Mg,Ti)4Oy) and its structural derivative were found in the Fe-As-Ca-Mg-Ti-O system. The crystal structure of (Fe2As2)(Ca5(Mg,Ti)4Oy) is identical to that of (Fe2As2)(Ca5(Sc,Ti)4Oy), which was reported in our
A. Iyo   +36 more
core   +1 more source

SYNTHESIS AND DIELECTRIC PROPERTIES OF FOUR-LAYERED AURIVILLIUS SrBi4Ti4O15 DOPED Nd3+ AND Mn4+

open access: yesAlchemy, 2016
Synthesis of four-layered Aurivillius compound doped with Nd3+ and Mn4+ cations, SrBi3.5Nd0.5Ti4-xMnxO15 (x = 0; 0.5; 1) was carried out using molten salt method with a mixture of Na2SO4/K2SO4 as a flux.
Sestry Misfadhila   +4 more
doaj   +1 more source

Unexpected phase transition sequence in the ferroelectric Bi4Ti3O12

open access: yesIUCrJ, 2019
The high-temperature phase behaviour of the ferroelectric layered perovskite Bi4Ti3O12 has been re-examined by high-resolution powder neutron diffraction.
Yuan-Yuan Guo   +3 more
doaj   +1 more source

Proton Transfer‐Driven Modification of 3D Hybrid Perovskites to Form Oriented 2D Ruddlesden–Popper Phases

open access: yesSmall Science, 2022
Herein, it is shown how a proton transfer process between the organic moiety in 3D methylammonium lead halide perovskite and the introduced aliphatic alkylamines provides the basis for a fabrication route toward hybrid 3D/2D perovskites and finally ...
Zonghui Duan   +9 more
doaj   +1 more source

Non-cubic layered structure of Ba(1-x)K(x)BiO3 superconductor

open access: yes, 2003
Bismuthate superconductor Ba(1-x)K(x)BiO3 (x=0.27-0.49, Tc=25-32K) grown by an electrolysis technique was studied by electron diffraction and high-resolution electron microscopy.
A.P. Menushenkov   +25 more
core   +1 more source

Multi-inch single-crystalline perovskite membrane for high-detectivity flexible photosensors

open access: yesNature Communications, 2018
Hybrid halide perovskite single crystals show excellent optoelectronic properties but their small size and large thickness limit their application. Herein Liu et al.
Yucheng Liu   +21 more
doaj   +1 more source

Charge Ordering and Phase Competition in the Layered Perovskite Lasr2mn2o7

open access: yes, 1999
Charge-lattice fluctuations are observed in the layered perovskite manganite LaSr2Mn2O7 by Raman spectroscopy as high as 340 K and with decreasing temperature they become static and form a charge ordered (CO) phase below TCO=210 K.
A. dos Santos   +32 more
core   +1 more source

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

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