Fabrication of Quantum Wire Structures on Non-Planer InP Substrates by Molecular Beam Epitaxy

Takeyoshi SUGAYA  Tadashi NAKAGAWA  Yoshinobu SUGIYAMA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E79-C   No.11   pp.1568-1572
Publication Date: 1996/11/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Quantum Effect Devices and Their Fabrication Technologies)
Category: 
Keyword: 
quantum wire,  MBE,  In GaAs,  InAlAs,  compositional control,  

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Summary: 
The fabrication of InAlAs wire structures and InGaAs quantum wire structures on non-planer InP substrates with truncated ridges by molecular beam epitaxy is demonstrated. Indium-rich InAlAs epitaxial layers grown on top of ridges exhibit self-formation of electron-confining InAlAs wire structures. The InAlAs layers on top of the ridges lattice-matched to the substrate are obtained by the control of In flux during the growth. The InGaAs quantum wire structures have been fabricated on thus composition-controlled InAlAs barrier layers. The optical properties of the InGaAs quantum wires with composition-controlled InAlAs barrier layer are found to be better than that of the wires without compositional control.