| 摘要 |
Methods for monitoring power supplied to a substrate to form a doped or undoped crystalline semiconductor material are disclosed. The methods include providing a layer of an amorphous semiconductor material, doped or undoped, on a substrate and heating the substrate while monitoring the power applied to a heating element to heat the substrate so as to maintain a desired temperature. A decrease in the power supplied to the substrate is indicative of a conversion of the amorphous semiconductor material to a crystalline form thereof, at which time the power supplied to the heating element is terminated. By selecting the degree of crystallinity of the layer of doped or undoped amorphous semiconductor material on a substrate, the grain size of the resulting crystalline material can be controlled.
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