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Nonparabolic tendency of electron effective mass estimated by confined states in In0.53Ga0.47As/In0.52Al0.48As multi-quantum-well structures

✍ Scribed by K Tanaka; N Kotera; H Nakamura

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
76 KB
Volume
26
Category
Article
ISSN
0749-6036

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✦ Synopsis

We observed that a series of peaks, which were clearly extracted from a photocurrent difference spectrum, corresponded to interband optical transitions of an In 0.53 Ga 0.47 As/ In 0.52 Al 0.48 As multi-quantum wells structure. The nonparabolic tendency of the electron effective mass was suggested from eigenenergies of conduction subbands. The effective mass estimated in a direction normal to the InGaAs quantum well plane was heavier than the effective mass of the bulk band edge and was 0.07m 0 at the top of a quantum potential well.

πŸ“œ SIMILAR VOLUMES

Observation of confined states in anIn0.
Observation of confined states in anIn0.53Ga0.47As/In0.52Al0.48Asmulti-quantum wells structure by quantum confined Stark effects
✍ K Tanaka; T Murata; N Kotera; H Nakamura πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 180 KB

Photocurrent spectra in an In 0.53 Ga 0.47 As/In 0.52 Al 0.48 As multi-quantum wells structure containing 9.4 nm wide wells were measured at room temperature in electric fields. The exciton peaks of ground-state transitions shifted fairly in 167 kV cm -1 as the quantum confined Stark effect. Stark s