Method of raw material continuous feeding on silicon ribbon growth
Abstract
The ribbon crystal pulling method has the potential for making a reduction in the cost of solar cells possible. A description is presented of a continuus process for the production of silicon ribbon, taking into account the manufacture of a ribbon of 94 mm in width and 0.5 mm in thickness. The apparatus used for the continuous feeding process consists of three components, including the feeding device, the feed rate controller, and the liquid level sensor. The feeding device supplies granular silicon to the crucible. The liquid level sensor controls the level of the molten silicon. The continuous removal mechanism employs a laser cutting device and a ribbon transfer device. Continuous pulling is accomplished with the aid of a roller drive mechanism. The problem of air leakage into the furnace was solved by employing a gas curtain mechanism.
- Publication:
-
Photovoltaic Solar Energy Conference
- Pub Date:
- 1982
- Bibcode:
- 1982pvse.conf..965M
- Keywords:
-
- Cost Reduction;
- Crystal Growth;
- Laser Cutting;
- Ribbons;
- Silicon Films;
- Solar Cells;
- Crucibles;
- Energy Technology;
- Production Costs;
- Production Engineering;
- Vacuum Furnaces;
- Solid-State Physics