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Crystallization of InSb in Aerogel Crucibles
Author(s) -
Tscheuschner D.,
Ratke L.
Publication year - 1999
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/(sici)1521-4079(199902)34:2<167::aid-crat167>3.0.co;2-m
Subject(s) - crystallization , crucible (geodemography) , aerogel , materials science , semiconductor , temperature gradient , planar , crystal growth , thermal , optics , mineralogy , optoelectronics , chemical engineering , composite material , chemistry , crystallography , thermodynamics , physics , computational chemistry , computer graphics (images) , quantum mechanics , computer science , engineering
A novel type of a furnace for Vertical‐Gradient‐Freeze growth VGF of semiconductors is introduced. The basic element ‐ a silica aerogel crucible ‐ allows us to detect the crystallisation front with a suitable IR‐CCD‐camera due to its transparency. The growth velocity and the temperature gradient ahead of the solid‐liquid interface are directly obtained in an optical way from the experiment. This is demonstrated for the growth of InSb. The excellent thermal insulation properties of the aerogels lead to a nearly one‐dimensional temperature field and a nearly planar crystallisation front.