Defect engineering in III-V ternary alloys: Effects of strain and local charge on the formation of native deep defects

Bonapasta, Aa; Giannozzi, Paolo

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The effects of external and internal strains, and of defect charges on the formation of vacancies and antisites in GaAs and In0.5Ga0.5As have been investigated by first principles density functional methods. Present results show that a proper use of strain and defect charges permits the development of a defect engineering of III-V semiconductors. Specifically, they predict that doping may have major effects on the formation of antisites while the formation of vacancies may be favored only by extreme conditions of compressive strain. (C) 2002 Elsevier Science B.V. All rights reserved.

Titolo:	Defect engineering in III-V ternary alloys: Effects of strain and local charge on the formation of native deep defects
Autori:	Bonapasta AA GIANNOZZI, Paolo mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2002
Rivista:	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Citazione:	Defect engineering in III-V ternary alloys: Effects of strain and local charge on the formation of native deep defects / Bonapasta AA; Giannozzi P. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - ISSN 0168-583X. - STAMPA. - 186(2002), pp. 229-233.
Abstract:	The effects of external and internal strains, and of defect charges on the formation of vacancies and antisites in GaAs and In0.5Ga0.5As have been investigated by first principles density functional methods. Present results show that a proper use of strain and defect charges permits the development of a defect engineering of III-V semiconductors. Specifically, they predict that doping may have major effects on the formation of antisites while the formation of vacancies may be favored only by extreme conditions of compressive strain. (C) 2002 Elsevier Science B.V. All rights reserved.
Handle:	http://hdl.handle.net/11390/679667
Appare nelle tipologie:	1.1 Articolo in rivista

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