Quantum-confined Stark effect and built-in dipole moment in self-assembled InAs∕GaAs quantum dots

2004 ◽  
Vol 85 (14) ◽  
pp. 2791-2793 ◽  
Author(s):  
Peng Jin ◽  
C. M. Li ◽  
Z. Y. Zhang ◽  
F. Q. Liu ◽  
Y. H. Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dipole Moment ◽  
Stark Effect ◽  
Quantum Confined Stark Effect ◽  
Quantum Confined ◽  
Self Assembled

Quantum Confined Stark Effect and Permanent Dipole Moment of InAs–GaAs Self-Assembled Quantum Dots

2000 ◽  
Vol 178 (1) ◽  
pp. 269-275 ◽  
Author(s):  
P.W. Fry ◽  
I.E. Itskevich ◽  
D.J. Mowbray ◽  
M.S. Skolnick ◽  
J. Barker ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dipole Moment ◽  
Stark Effect ◽  
Permanent Dipole Moment ◽  
Quantum Confined Stark Effect ◽  
Quantum Confined ◽  
Self Assembled

Photocurrent Spectroscopy of InAs/GaAs Self-Assembled Quantum Dots: Observation of a Permanent Dipole Moment

1999 ◽  
Vol 571 ◽  
Author(s):  
P.W. Fry ◽  
I.E. Itskevich ◽  
D.J. Mowbray ◽  
M.S. Skolnick ◽  
J.A. Barker ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Dipole Moment ◽  
Stark Effect ◽  
Permanent Dipole Moment ◽  
Thermal Excitation ◽  
Zero Field ◽  
Quantum Confined Stark Effect ◽  
Photocurrent Spectroscopy ◽  
Self Assembled ◽  
Carrier Escape

ABSTRACTPhotocurrent spectroscopy of InAs/GaAs self-assembled quantum dots, studied as a function of applied electric field, is used to probe the nature of the confined electronic states. A field asymmetry of the quantum confined Stark effect is observed, consistent with the dots possessing a permanent dipole moment. The sign of this dipole indicates that for zero field the hole wavefunction lies above that of the electron, in disagreement with the predictions of all recent calculations. Comparison with a theoretical model demonstrates that the experimentally determined alignment of the electron and hole can only be explained if the dots contain a nonzero and non-uniform Ga content. The role of two different carrier escape mechanisms, tunneling and thermal excitation, is studied.

Quantum Confined Stark Effect in Single Self-Assembled CdTe Quantum Dots

2010 ◽  
Author(s):  
Ł. Kłopotowski ◽  
A. Kudelski ◽  
P. Wojnar ◽  
A. I. Tartakovskii ◽  
M. S. Skolnick ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Stark Effect ◽  
Cdte Quantum Dots ◽  
Quantum Confined Stark Effect ◽  
Quantum Confined ◽  
Self Assembled

Quantum-confined stark effect in the ensemble of phase-pure CdSe/CdS quantum dots

Nanoscale ◽  
2019 ◽  
Vol 11 (26) ◽  
pp. 12619-12625 ◽  
Author(s):  
Lei Zhang ◽  
Bihu Lv ◽  
Hongyu Yang ◽  
Ruilin Xu ◽  
Xiaoyong Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Stark Effect ◽  
Thick Shell ◽  
Cds Quantum Dots ◽  
Quantum Confined Stark Effect ◽  
Phase Pure ◽  
Cds Qds ◽  
Quantum Confined ◽  
Pure Cdse

The ensemble Stark effect (PL, absorption, and ASE) of phase-pure thick-shell CdSe/CdS QDs was systematically investigated under an electric field.

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