Silicon web process development PDF Download
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Author: Westinghouse Electric Corporation. Research & Development Center
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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Book Description
Author: Westinghouse Electric Corporation. Research & Development Center
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
Get Book Here
Book Description
Author: Westinghouse Electric Corporation. Research & Development Center
Publisher:
ISBN:
Category : Dendritic crystals
Languages : en
Pages : 46
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Author: Westinghouse Electric Corporation. Research & Development Center
Publisher:
ISBN:
Category : Dendritic crystals
Languages : en
Pages : 64
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Book Description
Author: Westinghouse Electric Corporation. Research & Development Center
Publisher:
ISBN:
Category : Dendritic crystals
Languages : en
Pages :
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Author: Westinghouse Electric Corporation. Research & Development Center
Publisher:
ISBN:
Category : Silicon
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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A manually operated system for continuous melt replenishment was completed and installed in the RE web growth facility. Initial results are positive though incomplete. Polysilicon pellets were fed for comparatively short periods, to 14 minutes, while web was growing without any disturbance from the pellet feed. A bench model of a manually-controlled mechanial pellet feeder was developed for later inclusion in the melt replenishment system. An after-heater with adjustable temperature and adjustable temperature gradient was installed in the J web growth facility for the purpose of controlling the vertical temperature gradient and the thermal stress generated in the growing web. The initial operation disclosed that the range of temperatures was somewhat less than intended and minor modifications have been made but not yet evaluated. The W web growth facility has performed well with respect to width control. Two problems have persisted and are undergoing developmental improvement: excessive deposits of oxide on the web, lid and heat shields and, secondly, objectionably high stress in the web. Computer models of temperature profile and stress are being used to support the development of lower stress in web grown from the W facility and the J facility which includes the afterheater system for vertical temerature gradient control. In addition, actual stress measurements in web grown are routinely made in order to evaluate results.
Author: M. Garfinkel
Publisher:
ISBN:
Category :
Languages : en
Pages : 92
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Author:
Publisher:
ISBN:
Category : Silicon
Languages : en
Pages : 46
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Author: A. B. Whitehead
Publisher:
ISBN:
Category : Ceramic coating
Languages : en
Pages : 92
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Author: Jet Propulsion Laboratory (U.S.)
Publisher:
ISBN:
Category : Photovoltaic power generation
Languages : en
Pages : 80
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