Patent ID: 8852340
Filing Date: 2014-10-07
Classification: C30B,Y10T

Abstract:
1. A method of manufacturing a monocrystal, the method comprising: providing a monocrystal pulling-up apparatus including: calculating a dopant evaporation speed J of the volatile dopant at which the volatile dopant is evaporated from the dopant-added melt per a unit time and a unit area using a formula (1) as follows: in which: calculating a cumulative evaporation amount of the volatile dopant at a predetermined timing of pulling up based on a product of the calculated dopant evaporation speed J, a cumulative time, and a surface area of the dopant-added melt; and controlling at least one of the flow volume X and the pressure Y so that the cumulative evaporation amount of the volatile dopant becomes a predetermined amount.