Abstract
A method of producing polycrystalline silicon ribbons for use in solar energy conversion cells was developed. Electron bombardment was utilized and the starting material was silicon powder. Large grains about 0.4 mm thick with a cross section of about 1 mm 2 were obtained as the result of the creation of a moving molten zone on the ribbon. In order to determine the optimal conditions for crystal growth, we calculated the thermal gradients (about 2000 °C cm −1) and bombardment parameters such as irradiating power (about 50 W).
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