Energy-level localization in Bragg-confined asymmetric coupled quantum wells studied by electric field modulation spectroscopy

2001 ◽  
Vol 63 (7) ◽  
Author(s):  
M. Levy ◽  
R. Beserman ◽  
R. Kapon ◽  
A. Sa’ar ◽  
V. Thierry-Mieg ◽  
...  
Keyword(s):  
Energy Level ◽  
Electric Field ◽  
Quantum Wells ◽  
Coupled Quantum Wells ◽  
Modulation Spectroscopy ◽  
Field Modulation

The Effects on Electric Field and Hydrostatic Pressure on the Doped Properties in a Strained (In,Ga)N-GaN Coupled Quantum Wells

2021 ◽  
Vol 16 (1) ◽  
pp. 97-103
Author(s):  
Xin-Nan Li ◽  
Guang-Xin Wang ◽  
Xiu-Zhi Duan
Keyword(s):  
Hydrostatic Pressure ◽  
Binding Energy ◽  
Electric Field ◽  
Quantum Wells ◽  
Variational Approach ◽  
Coupled Quantum Wells ◽  
Zinc Blende ◽  
Impurity Interaction ◽  
The Right ◽  
Peak Value

A variational approach is utilized to investigated the electron-impurity interaction in zinc-blende (In,Ga)N-GaN strained coupled quantum wells. The donor imputrity states are studied in consideration of the effects of hydrostatic pressure and external electric field. Our results indicate that the binding energy visibly depends on hydrostatic pressure, strain of coupled quantum wells, and applied electric field. The binding energy demonstrates a peak value with the reduction of the left-well width, and which displays a minimum value with the increment of the middle-barrier width. A decreasing behavior on the binding energy is also demonstrated when the right-well width enhances. Also the binding energy augments constantly with the increasing hydrostatic pressure. Besides, the dependency of the binding energy on variation of impurity position has been analyzed detailedly.

scholarly journals Electric-Field Tuning of Spin-Dependent Exciton-Exciton Interactions in Coupled Quantum Wells

1999 ◽  
Vol 83 (12) ◽  
pp. 2433-2436 ◽  
Author(s):  
G. Aichmayr ◽  
M. Jetter ◽  
L. Viña ◽  
J. Dickerson ◽  
F. Camino ◽  
...  
Keyword(s):  
Electric Field ◽  
Quantum Wells ◽  
Coupled Quantum Wells ◽  
Exciton Interactions

scholarly journals Direct and indirect excitons in semiconductor coupled quantum wells in an applied electric field

2012 ◽  
Vol 85 (4) ◽  
Author(s):  
K. Sivalertporn ◽  
L. Mouchliadis ◽  
A. L. Ivanov ◽  
R. Philp ◽  
E. A. Muljarov
Keyword(s):  
Electric Field ◽  
Quantum Wells ◽  
Applied Electric Field ◽  
Coupled Quantum Wells ◽  
Indirect Excitons

EXCITATION DYNAMICS AND ITS ELECTRIC FIELD DEPENDENCE OF MESO,MESO-LINKED PORPHYRIN ARRAYS IN A POLYMER FILM

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3588-3592 ◽  
Author(s):  
N. OHTA ◽  
Y. IWAKI ◽  
A. OSUKA ◽  
N. ARATANI
Keyword(s):  
Electric Field ◽  
Polymer Film ◽  
Fluorescence Spectra ◽  
Soret Band ◽  
Electric Field Effects ◽  
Modulation Spectroscopy ◽  
Electric Field Dependence ◽  
Exciton Splitting ◽  
Field Modulation ◽  
Excitation Dynamics

External electric field effects both on absorption spectra and on fluorescence spectra of meso,meso-linked porphyrin arrays doped in a polymer film have been examined using electric field modulation spectroscopy with the number of linked porphyrins (N) from 1 to 48. The magnitudes of the change in electric dipole moment (Δμ) and in molecular polarizability (Δα) are evaluated for excitation into each of the exciton splitting components of the Soret band, and excitation dynamics has been discussed. Field-induced quenching of fluorescence occurs, as the number of N increases, suggesting that nonradiative process(es) at the emitting state is significantly enhanced by an electric field, as N increases.

scholarly journals Characterization of merocyanine LB films by electric-field modulation spectroscopy.

1987 ◽  
pp. 2095-2100 ◽  
Author(s):  
Satoshi NISHIKAWA ◽  
Takao KODA ◽  
Yoshinori TOKUR ◽  
Keiji IRIYAMA
Keyword(s):  
Electric Field ◽  
Lb Films ◽  
Modulation Spectroscopy ◽  
Field Modulation
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