Method for manufacturing a polycrystalline layer on a substrate

Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering

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427 96, 427 99, 4272481, 427379, 4273977, C23C 1400, C23C 1600

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active

052136701

ABSTRACT:
A manufacturing method for polycrystalline silicon layers with a defined particle size and texture on a substrate provides for depositing of an amorphous silicon layer on the substrate. The substrate with the amorphous silicon layer is placed into a furnace at an initial temperature lower than the crystallization temperature of amorphous silicon. After an adjustment to thermal equilibrium, the furnace is heated in a controlled fashion from the initial temperature to a target temperature which is higher than the crystallization temperature, whereby the amorphous silicon layer is completely crystallized and becomes a polycrystalline layer. The method is particularly applicable in manufacturing polycrystalline silicon resistances for integrated circuits.

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