Composition Dependent Resonant Raman Scattering in Al0.33Ga0.67As/InxGa1-xAs1-yNy Multiquantum Wells
2006 ◽
Vol 518
◽
pp. 17-22
◽
Keyword(s):
InxGa1-xAs1-yNy/Al0.33Ga0.67As multiquantum wells grown by plasma-assisted molecular beam epitaxy are studied by resonant inelastic light scattering. Sharp vibration modes have been observed at 323, 402, 454 and 501 cm-1. Their intensities resonate at the barrier bandgap reduced by the presence of N. Their resonance energies reveal the influence of the N concentration on the barrier gap at the multiquantum well interfaces. These peaks are interpreted in terms of local vibrations involving the pairing of N atoms, which seems to occur mostly at the quantum well interfaces due to preferential bonding of N to Al.
2017 ◽
Vol 17
(3)
◽
pp. 398-402
◽
Keyword(s):
Keyword(s):
Keyword(s):