Effect of band nonparabolicity and material composition on intersubband transition energies of a heterostructure quantum ring for optical transmitter

2012 ◽  
Author(s):  
S. Bhattacharyya ◽  
Arpan Deyasi ◽  
N. R. Das
Keyword(s):  
Material Composition ◽  
Quantum Ring ◽  
Intersubband Transition ◽  
Transition Energies ◽  
Optical Transmitter ◽  
Band Nonparabolicity

Enhancement of intersubband transition energies in GaAs quantum wells by Si delta doping of high concentration

1998 ◽  
Vol 72 (6) ◽  
pp. 719-721 ◽  
Author(s):  
R. Sasagawa ◽  
H. Sugawara ◽  
Y. Ohno ◽  
H. Nakajima ◽  
S. Tsujino ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Intersubband Transition ◽  
High Concentration ◽  
Transition Energies ◽  
Delta Doping

Band nonparabolicity effect on spectral properties of quantum ring

2017 ◽  
Vol 103 ◽  
pp. 151-160 ◽  
Author(s):  
L.F. García ◽  
S.Yu. Revinova ◽  
I.D. Mikhailov
Keyword(s):  
Spectral Properties ◽  
Quantum Ring ◽  
Band Nonparabolicity

Intersubband transition energies in quantum wells inn-Type GaAs-Alx Ga1 -xAs heterostructures

1987 ◽  
Vol 32 (6) ◽  
pp. 655-661 ◽  
Author(s):  
V. M. S. Gomes ◽  
G. M. G. Oliveira ◽  
J. R. Leite ◽  
A. S. Chaves
Keyword(s):  
Quantum Wells ◽  
Intersubband Transition ◽  
Transition Energies

Investigation of Intersubband Transition in GaAs/AlGaAs Quantum Well Infrared Photodetectors

2007 ◽  
Vol 31 ◽  
pp. 105-107 ◽  
Author(s):  
D.S. Li ◽  
W.J. Fan ◽  
Y.X. Dang ◽  
B.S. Ma ◽  
D.H. Zhang ◽  
...  
Keyword(s):  
Quantum Well ◽  
Absorption Peak ◽  
Infrared Photodetectors ◽  
Structure Parameters ◽  
Intersubband Transition ◽  
Intersubband Transitions ◽  
Device Structure ◽  
Transition Energies ◽  
Quantum Well Infrared Photodetectors ◽  
Simulation Results

We report the design, characterization and fabrication of GaAs/AlGaAs quantum well infrared photodetectors (QWIPs) to achieve intersubband transitions at expected long wavelengths. With eight-band k·p model, we calculated the E2-E1 transition energies of GaAs/Al0.25Ga0.75As QWs with the different well widths. According to the calculation, we designed a QWIP with the estimated detection wavelength around 9 μm. The actual device structure parameters, such as well width and Al composition, were confirmed by the XRD measurements. The absorption peak at 9.46 μm and the peak responsivity at 8.7 μm are obtained, which are very close to the simulation results.

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