Abstract
Work included fabrication and characterization of solar cells from heat exchanger method (HEM), Dendritic Webs, and edge defined film-fed growth (EFG) ribbons. HEM solar cells showed only slight enhancement in cell performance after gettering steps (diffusion glass) were added. Dendritic webs from various growth runs indicated that performance of solar cells made from the webs was not as good as that of the conventional Czochralski (CZ) cells. EFG ribbons grown in CO ambient showed significant improvement in silicon quality. Efforts to passivate grain boundaries (G.B.) by preferential diffusion through G.B. did not result in improvement of sheet quality. Silicon sheets in these tests included SILSO, EFG, and Poly CZ.
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