Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
60 (1992), S. 2365-2367
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We show that the alloy composition and the period length of InGaAs/InP multiple quantum wells grown by chemical beam epitaxy is sensitive to the growth temperature and the As overpressure. Around 530 °C, the inhomogeneous broadening of absorption edge due to growth temperature instability is more of a consequence of changing period length than the ternary composition. The arsenic overpressure dependence of the ternary composition is investigated by secondary ion mass spectroscopy for the first time. The Ga/In ratio becomes smaller at high arsine flow rate. Superlattices containing 50–100 periods of InGaAs/InP exhibit x-ray diffraction peak widths comparable to the InP substrate can be prepared under continuous growth mode. Clear quantum confined Stark effect is observed in the electroabsorption characteristics of a 74-period modulator.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.107027
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