Semiautomatic system starts growth of silicon sheets more reliably than system with purely manual control. Control signals for starting sheetcrystal growth consist of ramps (during which signal changes linearly from one value to another over preset time interval) and soaks (during which signal remains constant). Ramps and soaks for best temperature and pulling speed determined by experimentation.
Starting Silicon-Ribbon Growth Automatically
NASA Tech Briefs ; 8 , 1
1984-04-01
Miscellaneous
No indication
English
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|Preventing Freezeup in Silicon Ribbon Growth
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