A New Model For Excess Ga Interdiffusion Process In GaAs/CdTe Heteroepitaxies

D. Esteve; M. Djafari-Rouhani; V. V. Pham; A. Bennis; J. J. Simonne

doi:10.1117/12.947352

15 August 1988 A New Model For Excess Ga Interdiffusion Process In GaAs/CdTe Heteroepitaxies

D. Esteve, M. Djafari-Rouhani, V. V. Pham, A. Bennis, J. J. Simonne

Proceedings Volume 0944, Growth of Compound Semiconductor Structures II; (1988) https://doi.org/10.1117/12.947352
Event: Advances in Semiconductors and Superconductors: Physics and Device Applications, 1988, Newport Beach, CA, United States

Abstract

The presence of a flat distribution of Gallium in a heteroepitaxial CdTe layer processed on GaAs, is originating from the disturbance of the upper layers of GaAs, due to the high lattice mismatch between CdTe and GaAs. A first order model, which considers the solid-state diffusion and the segregation effects at the outer surface of CdTe as the relevant mechanisms taking place during the process, provides this fairly constant Ga distribution through CdTe, and a step increase at the surface. The magnitude of the Ga density appears as a function of the growth rate and the process temperature. A more elaborated model would account also for the stress relaxation effects in the epilayer, allowing the diffusion constant to vary along CdTe.

Citation Download Citation

D. Esteve, M. Djafari-Rouhani, V. V. Pham, A. Bennis, and J. J. Simonne "A New Model For Excess Ga Interdiffusion Process In GaAs/CdTe Heteroepitaxies", Proc. SPIE 0944, Growth of Compound Semiconductor Structures II, (15 August 1988); https://doi.org/10.1117/12.947352

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available