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Disorder-defined buried-heterostructure Al/sub x/Ga/sub 1-//sub x/As-GaAs quantum well lasers by diffusion of silicon and oxygen from Al-reduced SiO/sub 2/

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.100734· OSTI ID:6355944

We describe a convenient method utilizing chemical reduction of SiO/sub 2/ by Al (from Al/sub x/Ga/sub 1-//sub x/As) to generate Si and O for impurity-induced layer disordering (IILD) of Al/sub x/Ga/sub 1-//sub x/As-GaAs quantum well heterostructures (QWHs). Experimental data show that Si-O diffusion (from SiO/sub 2/) is an effective source of Si for Si-IILD and of O that compensates the Si donor, thus resulting in higher resistivity layer-disordered crystal. The usefulness of the Si-O IILD source for fabricating low-threshold disorder-defined buried-heterostructure Al/sub x/Ga/sub 1-//sub x/As-GaAs QWH lasers is demonstrated.

Research Organization:
Electrical Engineering Research Laboratory, Center for Compound Semiconductor Microelectronics, and Materials Research Laboratory, University of Illinois at Urbana--Champaign, Urbana, Illinois 61801
OSTI ID:
6355944
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 54:13; ISSN APPLA
Country of Publication:
United States
Language:
English