Patent ID: 8283241

Claim:
A dopant injecting method for doping a semiconductor melt with germanium (Ge), the dopant injecting method comprising: loading the Ge in a solid state into a doping device including: a dopant holder that holds the Ge which is solid at normal temperature and liquefies the Ge near a surface of the semiconductor melt, the dopant holder including a communicating hole for delivering the liquefied Ge downwardly; a cover portion for covering the Ge held by the dopant holder; a vent provided on the cover portion for communicating with an outside; and a conduit tube provided below the dopant holder for delivering the liquefied Ge flowed from the communicating hole into the surface of the semiconductor melt; liquefying the Ge in the solid state loaded into the doping device while holding the doping device at a predetermined height from the surface of the semiconductor melt; and doping the semiconductor melt with the liquefied Ge flowed from the communicating hole, wherein the conduit tube is soaked in the semiconductor melt in at least one of the liquefying of the Ge and the doping of the semiconductor melt with the liquefied Ge.