Shape control in crystal pulling from a floating die
Journal
Journal of Crystal Growth
Journal Volume
166
Journal Issue
1-4
Pages
458-462
Date Issued
1996
Author(s)
Abstract
Controlling the final crystal shape is a major objective in the die-pulled crystal growth processes. The as-grown crystal shape is affected by many factors. Among these, thermal-capillary interaction is the key factor that controls the final crystal shape and dimension. In this paper, the shape control of a crystal pulled from a floating die is studied through experiments and three-dimensional thermal-capillary simulation. Crystal pulling of tin from a weighted floating die is used as a model system. The effects of key process parameters, including the applied weight and the temperature and the shape of the die, on the final crystal shape are discussed.
Type
journal article