Growth and microstructure of semi-metallic ErAs particles embedded in an In/sub 0.53/Ga/sub 0.47/As matrix

Author

Driscoll, D.C. ; Hanson, M.P. ; Muller, E. ; Gossard, A.C.

Author_Institution

Dept. of Mater., California Univ., Santa Barbara, CA, USA

fYear

2002

fDate

15-20 Sept. 2002

Firstpage

307

Lastpage

308

Abstract

We report the growth by molecular beam epitaxy of composite epitaxial materials consisting of layers of semimetallic ErAs particles embedded in an In/sub 0.53/Ga/sub 0.47/As matrix. These structures are grown on [100]-oriented semi-insulating InP:Fe substrates at 490/spl deg/C. This material may serve as a fast photoconductor for applications at longer wavelengths than low temperature grown GaAs or ErAs:GaAs. In the ErAs:InGaAs material, the ErAs particles act as fast carrier recombination centers, while the In/sub 0.53/Ga/sub 0.47/As matrix allows for photoexcitation at wavelengths of 1.55 /spl mu/m.

Keywords

III-V semiconductors; carrier lifetime; crystal microstructure; erbium compounds; gallium arsenide; indium compounds; molecular beam epitaxial growth; particle reinforced composites; photoconducting materials; semiconductor epitaxial layers; semiconductor growth; 1.55 micron; 490 degC; ErAs:InGaAs; ErAs:InGaAs material; In/sub 0.53/Ga/sub 0.47/As matrix; In/sub 0.53/Ga/sub 0.47/As:ErAs; InP:Fe; [100]-oriented semi-insulating InP:Fe substrates; composite epitaxial materials; fast carrier recombination centers; fast photoconductor; growth; microstructure; molecular beam epitaxy; photoexcitation; semi-metallic ErAs particles; wavelengths; Atomic force microscopy; Atomic layer deposition; Composite materials; Gallium arsenide; Indium compounds; Indium gallium arsenide; Microstructure; Photoconducting materials; Rough surfaces; Transmission electron microscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Molecular Beam Epitaxy, 2002 International Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

0-7803-7581-5

Type

conf

DOI

10.1109/MBE.2002.1037882

Filename

1037882