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Silicon ingot casting - heat exchanger method (hem). multi-wire slicing - fixed abrasive slicing technique (fast). phase 4 silicon sheet growth development for the large area sheet task of the low-cost solar array project
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schmid, F. |
| Copyright Year | 1981 |
| Description | The crystallinity of large HEM silicon ingots as a function of heat flow conditions is investigated. A balanced heat flow at the bottom of the ingot restricts spurious nucleation to the edge of the melted-back seed in contact with the crucible. Homogeneous resistivity distribution over all the ingot has been achieved. The positioning of diamonds electroplated on wirepacks used to slice silicon crystals is considered. The electroplating of diamonds on only the cutting edge is described and the improved slicing performance of these wires evaluated. An economic analysis of value added costs of HEM ingot casting and band saw sectioning indicates the projected add on cost of HEM is well below the 1986 allocation. |
| File Size | 4852403 |
| Page Count | 47 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810013011 |
| Archival Resource Key | ark:/13960/t4bp4wv3t |
| Language | English |
| Publisher Date | 1981-02-01 |
| Access Restriction | Open |
| Subject Keyword | Energy Production And Conversion Crystal Growth Single Crystals Diamonds Slicing Silicon Heat Transmission Abrasives Cost Analysis Wire Electroplating 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 |
