MONOCRYSTAL MAKING METHOD USING NOTHING NECKING PROCESS OF CONSPICUOUSLY IMPROVING THE ELECTRIC POTENTIAL SUCCESSING YIELD

摘要

PURPOSE: The monocrystal making method using nothing necking process optimizes the rotation control of the seed crystal so that the mechanical stress added in the melt contiguous area of the seed crystal be minimized. Monocrystal can be increased to nothing necking process.;CONSTITUTION: The bottom of the seed crystal is touched with the melt while rotating the seed crystal(S10). The bottom of the seed crystal in which the electric potential is created with the thermal shock is made within melt the dipping and the dislocation generation site is fused(S20). The number of rotation of the seed crystal is gradually increased to the number of rotation for the crystal pulling(S30). Monocrystal is increased if the number of rotation of the seed crystal reaches to the monocrystal increase condition(S40).;COPYRIGHT KIPO 2011