eprintid: 398 rev_number: 10 eprint_status: archive userid: 7 dir: disk0/00/00/03/98 datestamp: 2011-11-30 12:01:55 lastmod: 2015-05-29 20:01:15 status_changed: 2011-11-30 12:01:55 type: report metadata_visibility: show item_issues_count: 0 creators_name: French, D.A. creators_name: Pelesko, J.A. creators_name: Braun, R. title: A Mathematical Model for Epitaxial Semiconductor Crystal Growth from the Vapor Phase on a Masked Substrate ispublished: pub subjects: materials studygroups: mpi15 full_text_status: public abstract: Certain materials used in lasers are made by a process called epitaxial semiconductor crystal growth. In this report a mathematical model is developed for this growth process which occurs on a substrate at the junction between a masked region and exposed substrate in a vapor. This new model consists of two partial differential equations; one for the surface dynamics and one for the crystal growth on the exposed substrate. An analysis of the steady state solutions is furnished. Approximate solutions for time-dependent cases are found using two numerical methods. An asymptotic analysis is also carried out to determine transient solution behavior. The undesireable "bump" structure at the mask/substrate junction which has been observed experimentally is present in the solutions found by each method. date: 1999 citation: French, D.A. and Pelesko, J.A. and Braun, R. (1999) A Mathematical Model for Epitaxial Semiconductor Crystal Growth from the Vapor Phase on a Masked Substrate. [Study Group Report] document_url: http://miis.maths.ox.ac.uk/miis/398/1/Epitaxial-semiconductor-crystal-growth.pdf