Embodiments of the present description provide a connecting device. The device comprises a seed crystal support and a seed crystal rod, and the seed crystal support is connected to one end of the seed crystal rod.

A cantilever device for extending capacity of a scale used in a crystal growth apparatus having a pulling head wherein upward movement of a support column in the pulling head decreases a weight measured by the scale. The device includes a horizontal arm having first and second brackets, wherein the first bracket is attached to the pulling head. The device also includes a plate that extends through openings in the first and second brackets, wherein the plate includes a contact end and a free end. Further, the device includes a flexible element attached between the arm and the plate to form a pivot to enable rotation of the plate. A load is positioned on the plate wherein the load causes rotation of the plate about the pivot to cause upward movement of the contact end to move the support column upward to decrease weight measured by the scale.

A cantilever device for extending capacity of a scale used in a crystal growth apparatus having a pulling head wherein upward movement of a support column in the pulling head decreases a weight measured by the scale. The device includes a horizontal arm having first and second brackets, wherein the first bracket is attached to the pulling head. The device also includes a plate that extends through openings in the first and second brackets, wherein the plate includes a contact end and a free end. Further, the device includes a flexible element attached between the arm and the plate to form a pivot to enable rotation of the plate. A load is positioned on the plate wherein the load causes rotation of the plate about the pivot to cause upward movement of the contact end to move the support column upward to decrease weight measured by the scale.

The present invention is provided with a support on a gripping member, the support being composed of linear springs which elastically support an engaging portion. Thus, the support can be reused, and generation of rupture and dislocation of a single crystal ingot from a gripping part of the engaging portion can be prevented.

The present invention is provided with a support on a gripping member, the support being composed of linear springs which elastically support an engaging portion. Thus, the support can be reused, and generation of rupture and dislocation of a single crystal ingot from a gripping part of the engaging portion can be prevented.

A single crystal of silicon may be pulsed by a method that includes installing a seed holder on a drawing shaft in a Czochralski crystal pulling apparatus. Here, a dish, in a form of a hollow truncated cone, is secured between the seed holder and the drawing shaft such that an opening of the dish faces the drawing shaft. The dish has a top radius, a height, a material thickness, a base plate having a base plate radius, and a bore having a diameter. The method further includes: mounting a crystal seed into the seed holder; melting polycrystalline silicon in a crucible to create a melt; lowering the drawing shaft until the crystal seed is in contact with the melt; and pulling the single crystal. The drawing shaft and the dish are wetted with oil, prior to pulling the single crystal.

A single crystal of silicon may be pulsed by a method that includes installing a seed holder on a drawing shaft in a Czochralski crystal pulling apparatus. Here, a dish, in a form of a hollow truncated cone, is secured between the seed holder and the drawing shaft such that an opening of the dish faces the drawing shaft. The dish has a top radius, a height, a material thickness, a base plate having a base plate radius, and a bore having a diameter. The method further includes: mounting a crystal seed into the seed holder; melting polycrystalline silicon in a crucible to create a melt; lowering the drawing shaft until the crystal seed is in contact with the melt; and pulling the single crystal. The drawing shaft and the dish are wetted with oil, prior to pulling the single crystal.

A pulling head for a crystal growth furnace. The pulling head includes a servomotor and a rotatable housing attached to the servomotor, wherein the housing includes first, second, third and fourth housing magnets. The pulling head also includes a shaft attached to a scale and a connection device having first and second connection magnets. The first connection magnet is arranged between the first and second housing magnets to generate first and second magnetic repulsion forces and the second connection magnet is arranged between the third and fourth housing magnets to generate third and fourth magnetic repulsion forces. A rotation coupling is attached between the shaft and the connection device wherein the scale weighs the shaft, rotation coupling and the connection device. The servomotor rotates the housing and rotation of the housing is transmitted by the magnetic repulsion forces to the connection device to rotate the connection device.

A pulling head for a crystal growth furnace. The pulling head includes a servomotor and a rotatable housing attached to the servomotor, wherein the housing includes first, second, third and fourth housing magnets. The pulling head also includes a shaft attached to a scale and a connection device having first and second connection magnets. The first connection magnet is arranged between the first and second housing magnets to generate first and second magnetic repulsion forces and the second connection magnet is arranged between the third and fourth housing magnets to generate third and fourth magnetic repulsion forces. A rotation coupling is attached between the shaft and the connection device wherein the scale weighs the shaft, rotation coupling and the connection device. The servomotor rotates the housing and rotation of the housing is transmitted by the magnetic repulsion forces to the connection device to rotate the connection device.

A system for growing a crystal ingot from a melt includes a crucible assembly configured to contain the melt and a susceptor configured to support the crucible assembly. The crucible assembly includes a substantially transparent crucible. The system further includes a heating system for generating thermal energy and disposed to supply thermal energy to the susceptor via thermal radiation. The susceptor enables transfer of thermal energy to the melt via radiation through the transparent crucible.