NDLI: Low cost silicon solar array project silicon materials task: establishment of the feasibility of a process capable of low-cost, high volume production of silane (step 1) and the pyrolysis of silane to semiconductor-grade silicon (step 2) (Document No: 19780016681)

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Low cost silicon solar array project silicon materials task: establishment of the feasibility of a process capable of low-cost, high volume production of silane (step 1) and the pyrolysis of silane to semiconductor-grade silicon (step 2) (Document No: 19780016681)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Cheung, H. Morihara, H. Breneman, W. C. Farrier, E. G.
Copyright Year	1977
Description	A quartz fluid bed reactor capable of operating at temperatures of up to 1000 C was designed, constructed, and successfully operated. During a 30 minute experiment, silane was decomposed within the reactor with no pyrolysis occurring on the reactor wall or on the gas injection system. A hammer mill/roller-crusher system appeared to be the most practical method for producing seed material from bulk silicon. No measurable impurities were detected in the silicon powder produced by the free space reactor, using the cathode layer emission spectroscopic technique. Impurity concentration followed by emission spectroscopic examination of the residue indicated a total impurity level of 2 micrograms/gram. A pellet cast from this powder had an electrical resistivity of 35 to 45 ohm-cm and P-type conductivity.
File Size	10854271
Page Count	80
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19780016681
Archival Resource Key	ark:/13960/t0ns5jn4k
Language	English
Publisher Date	1977-12-01
Access Restriction	Open
Subject Keyword	Energy Production And Conversion Silanes Electrical Resistivity Semiconductors Materials Reaction Kinetics Feasibility Analysis Silicon Chemical Reactors Hydrogenation 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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