NDLI: Large area silicon sheet by efg. [quality control and productivity of edge-defined film-fed growth of ribbons

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Large area silicon sheet by efg. [quality control and productivity of edge-defined film-fed growth of ribbons

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1979
Description	Influences on ribbon quality which might be caused by various materials of construction which are used in the growth furnace were assessed. At the present level of ribbon quality, which has produced 8.5% to 9.5% efficient solar cells, no particular influence of any furnace part was detected. The experiments led to the suspicion that the general environment and the somewhat unoptimized materials handling procedures might be responsible for the current variations in ribbon quality and that, therefore, continuous work with this furnace under rather more stringent environmental conditions and operating procedures could perhaps improve materials quality to some extent. The work on the multiple furnace was continued with two multiple growth runs being performed. In these runs, the melt replenishment system performed poorly and extensive modifications to it were designed to make reliable melt feeding for five ribbon growth possible. Additional characterization techniques for wide ribbons, stress measurements, and growth dynamics experiments are reported.
File Size	3522683
Page Count	77
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19790018330
Archival Resource Key	ark:/13960/t2798zz56
Language	English
Publisher Date	1979-04-15
Access Restriction	Open
Subject Keyword	Energy Production And Conversion Solar Cells Productivity Thickness Ribbons Solar Arrays Furnaces Melts Crystal Growth Quality Control Graphite Silicon Stress Measurement Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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