Exciton states and direct interband light absorption in the ensemble of toroidal quantum dots

2017 ◽  
Vol 11 (04) ◽  
pp. 1 ◽  
Author(s):  
Davit A. Baghdasaryan ◽  
David B. Hayrapetyan ◽  
Hayk A. Sarkisyan ◽  
Eduard M. Kazaryan ◽  
Sergey I. Pokutnyi
Keyword(s):  
Quantum Dots ◽  
Light Absorption ◽  
Interband Light Absorption

scholarly journals Direct Interband Light Absorption in Strongly Prolated Ellipsoidal Quantum Dots’ Ensemble

2008 ◽  
Vol 4 (2) ◽  
pp. 106-112 ◽  
Author(s):  
K. G. Dvoyan ◽  
D. B. Hayrapetyan ◽  
E. M. Kazaryan
Keyword(s):  
Quantum Dots ◽  
Light Absorption ◽  
Interband Light Absorption

Interband light absorption and Pauli blocking in InAs/GaAs quantum dots covered by InGaAs quantum wells

2007 ◽  
Vol 22 (7) ◽  
pp. 814-818 ◽  
Author(s):  
L E Vorobjev ◽  
N K Fedosov ◽  
V Yu Panevin ◽  
D A Firsov ◽  
V A Shalygin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Wells ◽  
Light Absorption ◽  
Pauli Blocking ◽  
Interband Light Absorption

scholarly journals Coefficient of Interband Light Absorption by InAs/GaхIn1-хAs Quantum Dot Superlattice at Low Temperatures

2017 ◽  
Vol 18 (2) ◽  
pp. 151-157
Author(s):  
V.I. Boichuk ◽  
I.V. Bilynsky ◽  
R.I. Pazyuk
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Absorption Coefficient ◽  
Light Absorption ◽  
Low Temperatures ◽  
Dispersion Relations ◽  
Interband Absorption ◽  
Absorption Bands ◽  
Interband Light Absorption

In the paper the InAs/GaxIn1-xAs superlattice system of small size cubic QDs (10 nm) has been considered. Dispersion relations for electron and hole subbands have been calculated for superlattices of different dimensionality. The dependences of the interband absorption coefficient on light frequency, quantum dot size and interdot distance have been researched.It is shown, that the dimension of the superlattice has influence on the shape of the absorption bands and the increasingof the distance between quantum dots is followed by narrowing of the absorption peaks for all three superlatticetypes.

Interband Light Absorption in Semiconductor Quantum Dots Connected with the Charged and Neutral Exciton - Donor Complexes

2005 ◽  
Vol 277-279 ◽  
pp. 893-898
Author(s):  
A.P. Djotyan ◽  
A.A. Avetisyan ◽  
E.M. Kazaryan
Keyword(s):  
Quantum Dots ◽  
Oscillator Strength ◽  
Ground State ◽  
Light Absorption ◽  
Quantum Confinement ◽  
Optical Transition ◽  
Semiconductor Quantum Dots ◽  
Spherical Quantum Dot ◽  
Interband Optical Transition ◽  
Interband Light Absorption

The interband light absorption in spherical quantum dot (QD) of semiconductors connected with the charged and neutral exciton-donor complexes are studied theoretically. The oscillator strength for interband optical transition from valence band to the ground state of excitondonor complex in spherical QD has been investigate. The calculations were performed in the cases of infinite and finite potential barrier of QD. The dependences of the oscillator strength on the radius of the QD were obtained. It was shown that the quantum confinement gives rise a giant oscillator strength per impurity.

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