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| Collaborative
Work with Industrial Si Companies:
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| AstroPower |
Assistance
in thin-Si film growth and characterization issues |
| BP
Solar |
Consulting
on various silicon growth and processing topics |
| Dow
Corning Corporation |
Consulting
on photovoltaic silicon feedstock issues |
| EBARA
Solar, Inc. |
Assistance
in improving the Si dendritic web growth process |
| Evergreen
Solar, Inc. |
Consulting
on silicon ribbon growth |
| GTi |
Assistance
with demonstration of a novel silicon feedstock deposition process;
Consulting on silicon growth. |
| Lectrotherm
Process Systems |
Consulting
on silicon melting and solidification issues |
| Owens
Technology Corporation |
Consulting
on new silicon growth processes |
| Sarcos |
Consulting
on extreme dimension silicon crystal growth |
| Siemens
Solar Industries (Shell Solar) |
Development
of an ingot-lifetime measurement instrument |
| Solar
Power Industries, Inc. |
Consulting
on silicon growth processes |
| Sun
Power |
Consulting
on silicon crystal growth processes |
| UniSil
Corporation |
Assistance
in set up of a U.S. Float-zone single crystal Si manufacturing capability |
Examples
of R&D projects conducted with industrial Si PV companies
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|
Designed,
built, and installed an industrial silicon ingot lifetime tester
capable of measuring lifetime on large crystalline ingots or
multicrystalline blocks of silicon. Measurements can be made
on as-cut surfaces without special sample preparation, using a
unique probe head and contacting system. The
instrument is especially useful for monitoring the quality of
ingots before expending resources on wafering and PV cell
fabrication. |
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Grew
silicon tubes from the melt for a specialty application by a
technique we introduced earlier
__________________
T.F. Ciszek, "Melt Growth of
Crystalline Silicon Tubes by a Capillary Action Shaping
Technique," Phys. Stat. Sol. (a) 32, (l975) 521). |
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Improved
a ribbon melt growth process by implementing high-yield seeding
procedures, eliminating undesired motion of shallow melts,
thermally decoupling melt replenishment from ribbon growth, and
characterizing dislocation and lattice distortion phenomena via
X-ray topography. |
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Demonstrated
a "containerless" silicon feedstock particulate
consolidation system based on our cold-crucible electromagnetic
semicontinuous casting process
_____________
Theodore F. Ciszek, "Method and
Apparatus for Casting Conductive and Semiconductive
Materials," U.S. Patent 4,572,812 (1986)). |
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