Thermal annealing recovery of intersubband transitions in proton-irradiated GaAs/AlGaAs multiple quantum wells

2000 ◽  
Vol 77 (18) ◽  
pp. 2867-2869 ◽  
Author(s):  
F. Hegeler ◽  
M. O. Manasreh ◽  
C. Morath ◽  
P. Ballet ◽  
H. Yang ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Thermal Annealing ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Intersubband Transitions

Thermal Annealing Recovery of Intersubband Transition in Proton-Irradiated GaAs/Al0.3Ga0.7As Multiple Quantum Wells

1999 ◽  
Vol 607 ◽  
Author(s):  
H.S. Gingrich ◽  
C. Morath ◽  
M.O. Manasreh ◽  
P. Ballet ◽  
J.B. Smathers ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Absorption Spectra ◽  
Thermal Annealing ◽  
Isothermal Annealing ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Intersubband Transitions ◽  
Dimensional Electron Gas ◽  
Induced Defects ◽  
Irradiation Induced Defects

AbstractOptical absorption spectra of intersubband transitions in heavily proton irradiated n-type GaAs/AlGaAs multiple quantum wells were studied as a function of isochronal and isothermal annealing. The absorption spectra of intersubband transitions were depleted in samples irradiated with 1MeV proton doses higher than 1.0 × 1014 cm−2. Thermal annealing of the irradiated samples show that the intersubband transitions are recovered. The relatively lower annealing temperatures at which the recovery is observed indicate that the irradiation-induced defects that trapped the two-dimensional electron gas in the quantum wells are vacancy and interstitial related defects. Once these traps are thermally annealed the electrons are released back to the quantum wells, resulting in the recovery of the intersubband transitions.

Intrasubband and intersubband transitions in GaAs∕AlxGa1−xAs multiple quantum wells

2007 ◽  
Vol 90 (16) ◽  
pp. 162111
Author(s):  
J. M. Li ◽  
K. Y. Qian ◽  
Q. S. Zhu ◽  
Z. G. Wang
Keyword(s):  
Quantum Wells ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Intersubband Transitions
Sign in / Sign up

Export Citation Format

Share Document