Point Defects as Precursors of Electron-Hole Centers: Systematics and Theories of Radiation Centers in Minerals

1994 ◽  
pp. 180-197 ◽  
Author(s):  
Y. Dusausoy ◽  
J. A. Weil
Keyword(s):  
Point Defects ◽  
Electron Hole ◽  
Hole Centers ◽  
Radiation Centers

Luminescence Of A New Material: GaN Grown On NdGaO3

1997 ◽  
Vol 482 ◽  
Author(s):  
K. P. Korona ◽  
K. Pakula ◽  
A. Wysmolek ◽  
J. M. Baranowski ◽  
J. P. Bergman ◽  
...  
Keyword(s):  
Point Defects ◽  
Radiative Recombination ◽  
High Electrical Conductivity ◽  
High Oxygen Concentration ◽  
Electron Hole ◽  
New Material ◽  
Exciton Region ◽  
Pl Emission ◽  
Very High ◽  
Hole Recombination

AbstractIt is shown that heteroepitaxial GaN layers grown on NdGaO3, in spite of a very high conductivity (˜ 10 Ω−1cm−1) have very efficient luminescence properties. It is shown that a high electrical conductivity is caused by contamination of GaN layers with oxygen. Efficient emission due to donor bound excitons (at hv = 3.475 eV), free excitons and free electron – hole recombination have been identified. The total PL emission in the exciton region exceeds the intensity from the homoepitaxial GaN layers. It is argued that a high oxygen concentration eliminates nonradiative channels connected with point defects, leading to efficient radiative recombination.

scholarly journals Intrinsic emission and electron-hole trapping centers in crystals Li2SO4-Cu

2021 ◽  
Vol 5 (2) ◽  
pp. 140-147
Author(s):  
T.N. Nurakhmetov ◽  
Zh.M. Salikhodzha ◽  
M.Y. Dolomatov ◽  
B.N. Yussupbekova ◽  
A.M. Zhunusbekov ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Vacuum Ultraviolet ◽  
Annealed Sample ◽  
Excitation Spectra ◽  
Electron Hole ◽  
Hole Trapping ◽  
Trapping Centers ◽  
Hole Centers ◽  
Intrinsic Emission

In the present work, the emission and excitation spectra in Li2SO4-Cu crystals have been obtained by the methods of vacuum-ultraviolet and thermoactivation spectroscopy. We have studied the nature of emission from a pressed and annealed sample of Li2SO4-Cu powders. It has been revealed that at low temperatures Cu0-SO4--centers are formed during the trap of electrons by Cu+-centers and during localization of SO4--radicals in the form of localized hole centers.

The generation of point defects in GaAs by electron-hole recombination at dislocations

1978 ◽  
Vol 21 (11-12) ◽  
pp. 1413-1417 ◽  
Author(s):  
P.W. Hutchinson ◽  
P.S. Dobson ◽  
B. Wakefield ◽  
S. O'Hara
Keyword(s):  
Point Defects ◽  
Electron Hole ◽  
Hole Recombination

Reduction of Cr(VI) Assisted by Sol-Gel Generated Electron-Hole Centers

2005 ◽  
Vol 36 (2) ◽  
pp. 173-182
Author(s):  
M. A. Zaitoun ◽  
L. S. Bailey ◽  
J. F. Brinkley ◽  
C. M. Dickerson ◽  
C. T. Lin
Keyword(s):  
Sol Gel ◽  
Electron Hole ◽  
Hole Centers

RECOMBINATION PROCESSES IN SYSTEMS BASED ON IONIC CRYSTALS WITH EMBEDDED SELF-ORGANIZED NANOCRYSTALS

2007 ◽  
Vol 06 (05) ◽  
pp. 311-314 ◽  
Author(s):  
N. G. ROMANOV ◽  
A. G. BADALYAN ◽  
D. O. TOLMACHEV ◽  
V. L. PREOBRAZHENSKI ◽  
P. G. BARANOV ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Crystal Lattice ◽  
The Self ◽  
Ionic Crystals ◽  
Electron Hole ◽  
Self Organized ◽  
Recombination Processes ◽  
Low Dimensional ◽  
Hole Centers ◽  
Hole Recombination

The recombination processes leading to tunneling afterglow and photostimulated luminescence were studied in systems based on ionic host crystals with low-dimensional structures (semiconductor quantum dots) formed as a result of the self-organized growth. The systems of AgBr nanocrystals embedded into the KBr crystal lattice and CsPbBr 3 nanocrystals embedded into the CsBr crystal lattice were investigated. The energy of electron–hole recombination in matrices was shown to transfer to quantum dots. To identify the structure of recombining electron and hole centers, magnetic resonance detected optically by monitoring the tunneling afterglow was used.

Electron-hole centers in natural and synthetic calcite single crystals containing phosphorus

1968 ◽  
Vol 9 (2) ◽  
pp. 245-247 ◽  
Author(s):  
L. V. Bershov ◽  
M. I. Samoilovich ◽  
V. G. Lushnikov ◽  
A. N. Tarashchan
Keyword(s):  
Single Crystals ◽  
Electron Hole ◽  
Synthetic Calcite ◽  
Hole Centers ◽  
Natural And Synthetic
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