scholarly journals The issue of 0D-like ground state isolation in GaAs- and InP-based coupled quantum dots-quantum well systems

2017 ◽  
Vol 906 ◽  
pp. 012019 ◽  
Author(s):  
M. Syperek ◽  
J. Andrzejewski ◽  
W. Rudno-Rudziński ◽  
A. Maryński ◽  
G. Sȩk ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Well ◽  
Ground State ◽  
Coupled Quantum Dots

scholarly journals Бимодальность в спектрах электролюминесценции InGaAs квантовых яма-точек

2022 ◽  
Vol 56 (1) ◽  
pp. 97
Author(s):  
A.A. Харченко ◽  
А.М. Надточий ◽  
А.А. Серин ◽  
С.А. Минтаиров ◽  
Н.А. Калюжный ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Active Region ◽  
Quantum Well ◽  
Ground State ◽  
Polarized Light ◽  
Temperature Decrease ◽  
Temperature Range ◽  
Polarized Emission ◽  
Different Types ◽  
Two Peaks

The electroluminescence spectra of waveguiding structures based on quantum well-dots were investigated with polarization resolution in the temperature range of 60−300 K. It is found that the ground state emission consists of two peaks with different degrees of TE-polarization and these peaks are getting closer with temperature decrease. We attribute the bimodality to the existence of two different types of nanoobjects in the active region: the quantum well-dots, which have partially TE-polarized emission, and quantum dots emitting almost fully TE-polarized light.

Carrier relaxation bottleneck in type-II InAs/InGaAlAs/InP(001) coupled quantum dots-quantum well structure emitting at 1.55 μm

2018 ◽  
Vol 112 (22) ◽  
pp. 221901 ◽  
Author(s):  
M. Syperek ◽  
J. Andrzejewski ◽  
E. Rogowicz ◽  
J. Misiewicz ◽  
S. Bauer ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Well ◽  
Type Ii ◽  
Coupled Quantum Dots ◽  
Carrier Relaxation ◽  
Quantum Well Structure

Bonding-Antibonding Ground States Transition in Coupled Quantum Dots

2012 ◽  
Vol 220-223 ◽  
pp. 2017-2021
Author(s):  
Nai Yun Tang
Keyword(s):  
Quantum Dots ◽  
Single Particle ◽  
Ground State ◽  
State Transition ◽  
Ground States ◽  
Orbit Interaction ◽  
Spin Orbit ◽  
Ground State Transition ◽  
Coupled Quantum Dots ◽  
Molecular Ground State

The two lowest single-particle hole states in two vertically coupled quntum dots (CQDs) are investigated by using the six-band k • p model. A bonding–antibonding ground-state transition is observed with an increasing interdot distance. This result is counterintuitive since the antibonding molecular ground state is never observed in natural diatomic molecules. By comparing the wavafunction component of hole, the results verify that the reordering of bonding and antibonding orbitals with an increasing interdot distance is caused by spin–orbit interaction of holes.

Ground-state switching characteristics in vertically-coupled InGaN/GaN quantum dots

2013 ◽  
Vol 63 (11) ◽  
pp. 2269-2272 ◽  
Author(s):  
Seoung-Hwan Park ◽  
Woo-Pyo Hong ◽  
Jong-Jae Kim
Keyword(s):  
Quantum Dots ◽  
Ground State ◽  
State Switching ◽  
Switching Characteristics
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