Effect of hydroxyl and oxygen ions on optical stability of F-centers in KBr crystals

1972 ◽  
Vol 15 (10) ◽  
pp. 1474-1478
Author(s):  
M. L. Kats ◽  
K. E. Gyunsburg ◽  
L. I. Golubentseva
Keyword(s):  
Oxygen Ions ◽  
Optical Stability ◽  
F Centers

Optical stability of F centers in potassium chloride ?cleavage? and ordinary whiskers

1976 ◽  
Vol 19 (1) ◽  
pp. 107-110
Author(s):  
I. Ya. Melik-Gaikazyan ◽  
A. N. Kravets ◽  
A. A. Zhaksylykova
Keyword(s):  
Potassium Chloride ◽  
Optical Stability ◽  
F Centers

Effect of Techniques for Polishing Molybdenum Mirrors on their Optical Stability under Cleaning D2–N2 Plasma

2020 ◽  
Vol 14 (5) ◽  
pp. 1003-1015
Author(s):  
A. E. Gorodetsky ◽  
A. V. Markin ◽  
V. L. Bukhovets ◽  
V. L. Voytitsky ◽  
T. V. Rybkina ◽  
...  
Keyword(s):  
Optical Stability ◽  
N2 Plasma

Structural, electrical characterization and oxygen-diffusion paths in LaSrGa1-xMgxO4-δ (x=0.0-0.2) layered perovskites: an impedance spectroscopy and neutron diffraction study

2021 ◽  
Author(s):  
Carlos Marino ◽  
Juan Basbus ◽  
Ana L. Larralde ◽  
Jose Antonio Alonso ◽  
Maria Teresa Fernandez-Diaz ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Neutron Diffraction ◽  
Structural Characterization ◽  
Oxygen Diffusion ◽  
Electrical Characterization ◽  
Neutron Diffraction Study ◽  
Oxygen Ions ◽  
Diffusion Paths ◽  
Layered Perovskites

This work presents the results of the structural characterization of LaSrGa1-xMgxO4-δ oxides with x=0.0-0.2 (LSGM'); these oxides with layered K2NiF4-type structure are potential electrolytes of oxygen ions with applications in...

scholarly journals Encapsulated Passivation of Perovskite Quantum Dot (CsPbBr3) Using a Hot-Melt Adhesive (EVA-TPR) for Enhanced Optical Stability and Efficiency

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 419
Author(s):  
Saradh Prasad ◽  
Mamduh J. Aljaafreh ◽  
Mohamad S. AlSalhi ◽  
Abeer Alshammari
Keyword(s):  
Quantum Dots ◽  
Band Gap ◽  
Surface Defects ◽  
Optoelectronic Devices ◽  
Ethylene Vinyl Acetate ◽  
Light Emitting ◽  
Optical Stability ◽  
Perovskite Quantum Dots ◽  
Polymer Light Emitting Diodes ◽  
Hot Melt

The notable photophysical characteristics of perovskite quantum dots (PQDs) (CsPbBr3) are suitable for optoelectronic devices. However, the performance of PQDs is unstable because of their surface defects. One way to address the instability is to passivate PQDs using different organic (polymers, oligomers, and dendrimers) or inorganic (ZnS, PbS) materials. In this study, we performed steady-state spectroscopic investigations to measure the photoluminescence (PL), absorption (A), transmission (T), and reflectance (R) of perovskite quantum dots (CsPbBr3) and ethylene vinyl acetate/terpene phenol (1%) (EVA-TPR (1%), or EVA) copolymer/perovskite composites in thin films with a thickness of 352 ± 5 nm. EVA is highly transparent because of its large band gap; furthermore, it is inexpensive and easy to process. However, the compatibility between PQDs and EVA should be established; therefore, a series of analyses was performed to compute parameters, such as the band gap, the coefficients of absorbance and extinction, the index of refractivity, and the dielectric constant (real and imaginary parts), from the data obtained from the above investigation. Finally, the optical conductivities of the films were studied. All these analyses showed that the EVA/PQDs were more efficient and stable both physically and optically. Hence, EVA/PQDs could become copolymer/perovskite active materials suitable for optoelectronic devices, such as solar cells and perovskite/polymer light-emitting diodes (PPLEDs).

Design, Synthesis and Use of Phthalocyanines as a New Class of Visible-Light Photoinitiators for Free-Radical and Cationic Polymerizations

2021 ◽  
Author(s):  
Davy-Louis Versace ◽  
Louise Breloy ◽  
Yusuf Yagci ◽  
Ismail Yilmaz ◽  
Ozgur Yavuz
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Design Synthesis ◽  
New Class ◽  
Optical Stability ◽  
Cationic Polymerizations

Phthalocyanines (Pcs) are interesting molecules offering a fascinating chemistry world which received tremendous interest in the last decade. Their certain features such as high thermal, chemical, and optical stability as...

scholarly journals Structure and transport properties of triple-conducting BaxSr1−xTi1−yFeyO3−δ oxides

RSC Advances ◽  
2021 ◽  
Vol 11 (32) ◽  
pp. 19570-19578
Author(s):  
T. Miruszewski ◽  
K. Dzierzgowski ◽  
P. Winiarz ◽  
D. Jaworski ◽  
K. Wiciak-Pawłowska ◽  
...  
Keyword(s):  
Transport Properties ◽  
Charge Carriers ◽  
Conducting Oxides ◽  
Oxygen Ions ◽  
Perovskite Materials

BaxSr1−xTi1−yFeyO3−δ-based perovskite materials with different barium and iron contents are reported as triple conducting oxides (TCOs), which may conduct three charge carriers: oxygen ions, protons and electrons/holes.

Nonlinear Optical Stability of Polyphenylsulfone (PPSU)‐Containing Anthraquinones with High Transmittance

2021 ◽  
pp. 2100112
Author(s):  
Zengduo Cui ◽  
Jiale Ding ◽  
Xuanbo Zhu ◽  
Bolong Li ◽  
Haibo Zhang ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Stability

K-, L- and M-shell X-ray productions induced by oxygen ions in the 0.8–1.6MeV/amu range

2016 ◽  
Vol 381 ◽  
pp. 34-38 ◽  
Author(s):  
I. Gorlachev ◽  
N. Gluchshenko ◽  
I. Ivanov ◽  
A. Kireyev ◽  
S. Kozin ◽  
...  
Keyword(s):  
X Ray ◽  
Oxygen Ions

scholarly journals Energetic oxygen ions in the magnetosphere

Nature ◽  
1978 ◽  
Vol 271 (5643) ◽  
pp. 303-303
Author(s):  
D. T. Young
Keyword(s):  
Oxygen Ions

INELASTIC NEUTRON SCATTERING IN THE ANHARMONIC MODEL OF HIGH-Tc SUPERCONDUCTORS

1990 ◽  
Vol 04 (05) ◽  
pp. 341-346 ◽  
Author(s):  
N. M. PLAKIDA ◽  
V. I. AKSENOV ◽  
S. L. DRECHSLER ◽  
T. GALBAATAR ◽  
S. STAMENKOVIC
Keyword(s):  
Neutron Scattering ◽  
Cross Sections ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Spin Model ◽  
Anomalous Temperature Dependence ◽  
High Tc Superconductors ◽  
Anomalous Temperature ◽  
High Tc ◽  
Oxygen Ions

The inelastic neutron scattering on highly anharmonic vibrations of oxygen ions in high-T c superconductors is studied in the framework of a pseudo-spin model. By evaluating the coherent and incoherent cross-sections, it is found that the scattering intensity exhibits an anomalous temperature dependence.

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