Monofluorine substitution achieved high-Tc dielectric transition in a one-dimensional lead bromide hybrid photoluminescent perovskite semiconductor

2021 ◽  
Author(s):  
Fang-Fang Di ◽  
Hang Peng ◽  
Hua Zhang ◽  
Xue-Qin Huang ◽  
Wu-Jia Chen ◽  
...  
Keyword(s):  
Photoluminescence Properties ◽  
High Tc ◽  
One Dimensional ◽  
Lead Bromide ◽  
Dielectric Transition

H/F substitution applied on (TEA)PbBr3 gives monofluoride (FTEA)PbBr3, showing evident Tc enhancement, dielectric switching, semiconductor, and photoluminescence properties.

Intergrowth of modulated structures in high Tc Bi-Sr-Ca-Cu-O superconductors

1990 ◽  
Vol 48 (4) ◽  
pp. 76-77
Author(s):  
A.Q. He ◽  
G.W. Qiao ◽  
J. Zhu ◽  
H.Q. Ye
Keyword(s):  
Twin Structure ◽  
Modulated Structure ◽  
High Tc ◽  
One Dimensional ◽  
Lattice Constants ◽  
Superconducting Phases ◽  
Modulated Structures ◽  
Layer Structures

Since the first discovery of high Tc Bi-Sr-Ca-Cu-O superconductor by Maeda et al, many EM works have been done on it. The results show that the superconducting phases have a type of ordered layer structures similar to that in Y-Ba-Cu-O system formulated in Bi2Sr2Can−1CunO2n+4 (n=1,2,3) (simply called 22(n-1) phase) with lattice constants of a=0.358, b=0.382nm but the length of c being different according to the different value of n in the formulate. Unlike the twin structure observed in the Y-Ba-Cu-O system, there is an incommensurate modulated structure in the superconducting phases of Bi system superconductors. Modulated wavelengths of both 1.3 and 2.7 nm have been observed in the 2212 phase. This communication mainly presents the intergrowth of these two kinds of one-dimensional modulated structures in 2212 phase.

Synthesis of One-dimensional Nano-sized Defects in High Tc Superconductor

2006 ◽  
Author(s):  
In-Gann Chen ◽  
Maw-Kuen Wu ◽  
Shih-Yun Chen
Keyword(s):  
High Tc ◽  
One Dimensional ◽  
High Tc Superconductor

Unexpected photoluminescence properties from one-dimensional molecular chains

Nanoscale ◽  
2016 ◽  
Vol 8 (3) ◽  
pp. 1456-1461 ◽  
Author(s):  
Ye Yuan ◽  
Mingguang Yao ◽  
Shuanglong Chen ◽  
Shijie Liu ◽  
Xigui Yang ◽  
...  
Keyword(s):  
Single Crystals ◽  
Photoluminescence Properties ◽  
One Dimensional

Unlike bulk iodine, iodine molecular chains formed inside one dimensional (1D) nanochannels of AlPO4-5 (AFI) single crystals show unexpected PL behavior.

Computer Simulation of Pulsed Laser Ablation for YBaCuO Superconducting Films

1990 ◽  
Vol 191 ◽  
Author(s):  
Toshiyuki Nakamiya ◽  
Kenji Ebihara ◽  
P. K. John ◽  
B. Y. Tong
Keyword(s):  
Thin Films ◽  
Excimer Laser ◽  
Laser Energy ◽  
Pulsed Laser ◽  
The Finite Element Method ◽  
High Tc ◽  
One Dimensional ◽  
Incident Laser Energy ◽  
Krf Excimer Laser ◽  
Pulsed Laser Irradiation

ABSTRACTThe dynamics of melting and ablation of high Tc YBa2Cu3O7-x superconducting thin films flashed by a pulsed KrF excimer laser(λ=248nm) or a pulsed Nd-YAG laser (λ =1.06μ m) were studied numerically. The fundamental model during a pulsed laser irradiation was a one-dimensional heat conduction equation. The finite element method was applied to solve the equation including the temperature dependence of the thermal conductivity of YBaCuO thin films. In addition, the microstructure of YBa2Cu3O7-x bulk(l.5mm thick) flashed by a pulsed XeCl excimer laser (λ =308nm) was investigated by scanning electron microscopy (SEM) in order to estimate the threshold incident laser energy density for surface melting and ablation. The good agreements between the numerical calculations and the experimental results were obtained.

Supramolecular [Na(15-crown-5)]+ cations anchored to face sharing octahedral lead bromide chains featuring a rotor in a one-dimensional perovskite with a reversible isostructural phase transition near room temperature

CrystEngComm ◽  
2021 ◽  
Author(s):  
Guo-Jun Yuan ◽  
Hong Zhou ◽  
Li Li ◽  
Hong Chen ◽  
Xiaoming Ren
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Crystal Structures ◽  
Crystal Engineering ◽  
Room Temperature ◽  
One Dimensional ◽  
Lead Bromide ◽  
Engineering Study ◽  
Isostructural Phase Transition

Crystal engineering study aims at a better understanding of the correlation between the components and crystal structures, so that the desired crystal structure and functionality will be acquired. In this...

Manganese-Doped One-Dimensional Organic Lead Bromide Perovskites with Bright White Emissions

2017 ◽  
Vol 9 (46) ◽  
pp. 40446-40451 ◽  
Author(s):  
Chenkun Zhou ◽  
Yu Tian ◽  
Oussama Khabou ◽  
Michael Worku ◽  
Yan Zhou ◽  
...  
Keyword(s):  
One Dimensional ◽  
Lead Bromide ◽  
Organic Lead

scholarly journals MECHANISM OF HIGH-Tc SUPERCONDUCTIVITY BASED MAINLY ON TUNNELING MEASUREMENTS IN CUPRATES

2005 ◽  
Vol 19 (16) ◽  
pp. 743-770 ◽  
Author(s):  
A. MOURACHKINE
Keyword(s):  
Tunneling Spectroscopy ◽  
Phase Coherence ◽  
Spin Fluctuations ◽  
Cooper Pairs ◽  
High Tc ◽  
High Tc Superconductivity ◽  
One Dimensional ◽  
Topological Excitations ◽  
Discrete Breathers

The main purpose of this brief review is to present a sketch of the mechanism of high-Tc superconductivity based mainly on tunneling measurements in cuprates. In the review, we shall mostly discuss tunneling spectroscopy in Bi 2 Sr 2 CaCu 2 O 8. Analysis of the data shows that the Cooper pairs in cuprates are topological excitations (e.g. quasi-one-dimensional bisolitons, discrete breathers etc.), and the phase coherence among the Cooper pairs appears due to spin fluctuations.

One-Dimensional Rare Earth Compounds and Complexes: Preparation and Improved Photoluminescence Properties

2008 ◽  
Vol 8 (3) ◽  
pp. 1316-1325 ◽  
Author(s):  
Hongwei Song ◽  
Guohui Pan ◽  
Xue Bai ◽  
Suwen Li ◽  
Hongquan Yu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Inorganic Compounds ◽  
Upconversion Luminescence ◽  
Rare Earth Complexes ◽  
Rare Earth Compounds ◽  
Photoluminescence Properties ◽  
Optical Fields ◽  
Hydrothermal Route ◽  
One Dimensional ◽  
Application Potential

One-dimensional nanosized phosphors demonstrate special structural and photoluminescence properties, which have application potential in some optical fields. In this article, we present our recent progress on preparation and luminescence properties of some one-dimensional rare earth compounds and complexes, the core–shell oxide nanowires prepared by a two-step hydrothermal route, the nanowires of some inorganic compounds doped with rare earths and rare earth complexes/PVP composites prepared by the electrospinning method, and the rare earth complexes in the SBA-15 mesoporous molecule sieves. In these systems, some novel or improved photoluminescence properties are observed such as improved luminescence quantum yield, thermal stability and/or photostability, and depressed thermal effect in upconversion luminescence.

Sign in / Sign up

Export Citation Format

Share Document