scholarly journals One-dimensional lead iodide hybrid stabilized by inorganic hexarhenium cluster cations as a new broad-band emitter

RSC Advances ◽  
2021 ◽  
Vol 11 (40) ◽  
pp. 24580-24587
Author(s):  
Giang Thi Ly ◽  
Jun Choi ◽  
Youngmee Kim ◽  
Yuna Kim ◽  
Sujin Kim ◽  
...  
Keyword(s):  
Broad Band ◽  
Lead Iodide ◽  
One Dimensional ◽  
Strong Broad Band ◽  
Broad Band Emission ◽  
Band Emission

A novel one-dimensional (1D) hybrid {[Re6S8(Pz)6][Pb3I8(DMF)2]}·6(DMF) with hexarhenium cluster cations has been synthesized, and it shows strong broad-band emission with peak at 634 nm.

Microscintillator of Ce Doped β-NaLuF4 in Uniform Hexagonal Prism Morphology by a Facile Hydrothermal Method

2014 ◽  
Vol 541-542 ◽  
pp. 220-224
Author(s):  
Li Sha Liu ◽  
Hao Hong Chen ◽  
Bi Qiu Liu ◽  
Bin Tang ◽  
Zhi Jia Sun ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Hexagonal Phase ◽  
Broad Band ◽  
High Energy ◽  
Hexagonal Prism ◽  
Facile Hydrothermal Method ◽  
X Ray ◽  
Strong Broad Band ◽  
Broad Band Emission ◽  
Band Emission

To explore micro-or nanoscintillator with a controllable architecture, a novel facile hydrothermal method easy for commercial run was used to synthesize pure and Ce doped β-NaLuF4 microcrystals at 453K. The morphology of uniform hexagonal prism with 3.3μm in diameter and 1.4 μm in thickness, respectively, is presented by the results of scanning electron microscopy (SEM). Powder X-ray diffraction (PXRD) patterns show the products are both pure hexagonal phase. Different from the undoped product without any irradiation, the Ce doped product has given strong broad band emission attributed to 5d4f transition of Ce3+, which can be potentially used as scintillator for biomedical imaging and detectors for high energy such as X-ray and γray. This synthetical strategy extends the understanding about nanomaterial chemistry and can be also useful for other systems such as fluorides, oxides and sulfides.

scholarly journals Origin of Broad-Band Emission and Impact of Structural Dimensionality in Tin-Alloyed Ruddlesden–Popper Hybrid Lead Iodide Perovskites

2019 ◽  
Vol 5 (2) ◽  
pp. 347-352 ◽  
Author(s):  
Tianyang Li ◽  
Xihan Chen ◽  
Xiaoming Wang ◽  
Haipeng Lu ◽  
Yanfa Yan ◽  
...  
Keyword(s):  
Broad Band ◽  
Lead Iodide ◽  
Broad Band Emission ◽  
Band Emission ◽  
Structural Dimensionality

Efficient Broad-Band Emission from Contorted Purely Corner-Shared One Dimensional (1D) Organic Lead Halide Perovskite

2019 ◽  
Vol 31 (7) ◽  
pp. 2253-2257 ◽  
Author(s):  
Anupam Biswas ◽  
Rangarajan Bakthavatsalam ◽  
Samir R. Shaikh ◽  
Aparna Shinde ◽  
Amruta Lohar ◽  
...  
Keyword(s):  
Broad Band ◽  
One Dimensional ◽  
Broad Band Emission ◽  
Band Emission ◽  
Organic Lead ◽  
Halide Perovskite ◽  
Lead Halide

scholarly journals Luminescence at low temperature in pure ZnO phosphors

2020 ◽  
Vol 22 (2) ◽  
pp. 1-7
Author(s):  
Edgar Eduardo Mosquera
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Low Temperatures ◽  
Spectral Properties ◽  
Broad Band ◽  
Strong Broad Band ◽  
Broad Band Emission ◽  
Band Emission ◽  
Electric Dipoles ◽  
State Chemical

In this paper, samples of pure ZnO were prepared through solid-state chemical reaction, and optical spectral properties were investigated at low temperature. It was found that the strong broad band emission was shifted to the blue side with increase of temperature. It is tentatively attributed to the change of local electric field from electric dipoles, orientation of which is sensitive to temperature. The ultraviolet sharp lines observed at low temperatures are assigned to bound excitons and their phonon replicas.

scholarly journals The challenging SED of AP Librae

2011 ◽  
Vol 7 (S284) ◽  
pp. 411-413 ◽  
Author(s):  
David Sanchez ◽  
Berrie Giebels ◽  
Pascal Fortin ◽  
Keyword(s):  
Spectral Energy Distribution ◽  
Broad Band ◽  
Low Frequency ◽  
Theoretical Models ◽  
Intermediate Frequency ◽  
High Energy ◽  
Spectral Energy ◽  
Broad Band Emission ◽  
Band Emission ◽  
Bl Lac

AbstractMatching the broad-band emission of active galaxies with the predictions of theoretical models can be used to derive constraints on the properties of the emitting region and to probe the physical processes involved. AP Librae is the third low frequency peaked BL Lac (LBL) detected at very high energy (VHE, E>100GeV) by an Atmospheric Cherenkov Telescope; most VHE BL Lacs (34 out of 39) belong to the high-frequency and intermediate-frequency BL Lac classes (HBL and IBL). LBL objects tend to have a higher luminosity with lower peak frequencies than HBLs or IBLs. The characterization of their time-averaged spectral energy distribution is challenging for emission models such as synchrotron self-Compton (SSC) models.

Preparation and Luminescence Property of LaMgAl11O19

2012 ◽  
Vol 519 ◽  
pp. 224-227 ◽  
Author(s):  
Xin Min ◽  
Ming Hao Fang ◽  
Yan Gai Liu ◽  
Zhao Hui Huang
Keyword(s):  
Solid State ◽  
Luminescence Property ◽  
Broad Band ◽  
Emission Spectra ◽  
Synthesis Temperature ◽  
Solid State Lasers ◽  
Broad Band Emission ◽  
Band Emission ◽  
Air Atmosphere ◽  
Fluorescent Lamps

Lanthanum magnesium hexaaluminate (LaMgAl11O19, LMA) has attracted much interest as its widely used in solid state lasers, TV phosphors and fluorescent lamps. In this paper, LaMgAl11O19 ceramic was pressureless sintered at 1650 °C for 10 h in air atmosphere using LaMgAl11O19 powders prepared by solid-state reaction at 1500 °C for 4 h. The result indicated that the synthesis temperature of LaMgAl11O19 powders was about 1500 °C. The LMA ceramic sample was dense and had a microstructure of platelet-like gains. The excitation spectrum shows two wide bands with the peaks at about 254 nm and 265 nm by monitoring the strongest 362 nm emission, and the emission spectra is consisted of a broad band emission with their peaks near 362 nm with a half-width about 5 nm exciting with 265 nm wavelength.

Synthesis, Characterization and Photophysical Properties of Rhenium(I) Complexe with 2-(naphthalen-2-yl)-1-phenyl-1H-imidazo[4,5-f][1,10]phenanthroline

2014 ◽  
Vol 988 ◽  
pp. 66-69
Author(s):  
Qiang Li ◽  
Le Li ◽  
Rong Feng Zhong ◽  
Hai Di Cai ◽  
Feng Zhao
Keyword(s):  
Experimental Data ◽  
Solid State ◽  
Photophysical Properties ◽  
Broad Band ◽  
High Energy ◽  
H Nmr ◽  
Emission Maximum ◽  
Broad Band Emission ◽  
Band Emission

In this paper, a Re(I) complex [Re(CO)3(E2)Cl], where E2 = 2-(naphthalen-2-yl)-1-phenyl-1H-imidazo[4,5-f][1,10]phenanthroline(E2), was synthesized and characterized by 1H NMR successfully. Experimental data confirm that Re(I) complex [Re(CO)3(E2)Cl] is high-energy-emitting one. The broad band emission upon excitation at λ = 400 nm with the emission maximum locates at λ = 581 nm in solid state and 614nm in CH2Cl2 solution were observed.

scholarly journals Orientation effects on the near-infrared broad-band emission of quasars

2019 ◽  
Vol 485 (1) ◽  
pp. 1405-1411 ◽  
Author(s):  
Susanna Bisogni ◽  
Elisabeta Lusso ◽  
Alessandro Marconi ◽  
Guido Risaliti
Keyword(s):  
Near Infrared ◽  
Broad Band ◽  
Broad Band Emission ◽  
Band Emission ◽  
Orientation Effects

scholarly journals Multiwavelength observations of PSR J2032+4127 during the 2017 periastron passage

2020 ◽  
Vol 495 (1) ◽  
pp. 365-374 ◽  
Author(s):  
M Chernyakova ◽  
D Malyshev ◽  
P Blay ◽  
B van Soelen ◽  
S Tsygankov
Keyword(s):  
Gamma Ray ◽  
Broad Band ◽  
Joint Analysis ◽  
Spectral Evolution ◽  
Optical Telescope ◽  
X Ray ◽  
Broad Band Emission ◽  
Band Emission ◽  
Mass Outflow ◽  
Be Star

ABSTRACT PSR J2032+4127 is only the second known gamma-ray binary where it is confirmed that a young radio pulsar is in orbit around a Be-star. The interaction of the pulsar wind with the mass outflow from the companion leads to broad-band emission from radio up to TeV energies. In this paper we present results of optical monitoring of the 2017 periastron passage with the Nordic Optical Telescope. These observations are complemented by X-ray (Swift/XRT, NuSTAR) and GeV (Fermi/LAT) monitoring. Joint analysis of the evolution of the parameters of the H α line and the broad-band (X-ray to TeV) spectral shape allows us to propose a model linking the observed emission to the interaction of the pulsar and Be-star winds under the assumption of the inclined disc geometry. Our model allows the observed flux and spectral evolution of the system to be explained in a self-consistent way.

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