Floatzone Systems

 

Production systems for silicon (using the Floatzone process)

 

In the production of silicon crystals by the Floatzone method, the polycrystalline raw material is molten by induction in the vicinity of a high frequency coil without any crucible contact. The melt drop is “floating” and confined by its surface tension forces and electromagnetic forces. After dipping a single crystal seed into the melt drop from below, successive single crystal growth is performed by slowly pulling the seed downward, giving room to the solidifying material.

 

The advantage of the silicon grown by the Floatzone method lies in its extreme purity due to the absence of a contaminating crucible. This purity makes the Floatzone silicon superior especially in the application of power electronics and in the application of high efficiency solar cells.

 

The specific process causes high quality requirements to the Floatzone production system, which must be extraordinarily smooth and vibration-free in its movements while maintaining high cleanliness inside the chamber as well.

 

 

 

 

	Typ FZ 14 This machine is an intelligently designed piece of equipment, which meets the requirements in silicon crystal growing at diameters of up to 4 inches and at the same time has reasonable physical dimensions. The machine has a crystal growing length of 1300 mm and produces 3" crystals up to ...   more

 

	Typ FZ 14 M For analytical purposes, the FZ-14M has been developed. This is a floatzone silicon crystal grower specifically designed in accordance with the requirements of ASTM Std. F1723-96. The FZ-14M converts miniature rods of polycrystalline silicon into monocrystalline silicon for use in the assessment of the ...  more

 

 

	Typ FZ 30 The FZ-30 consists of a main, upper and lower chamber and an upper and lower pulling arrangement, all built as modules. The FZ-30 is fully equipped with access doors, a tank circuit, a control panel, a high frequency generator, a data logging system and an operator’s platform ...  more

 

	Typ SR 110 This machine is very effective since two slim rods are produced at the same time, using a double hole HF-coil connected to one generator. Every care has been taken to make the machine very operator-friendly and to allow fast restart of pulling after harvest of the produced slimrods ... more

 

 

 

Your service contact

 

PVA TePla AG
Fiona Becker
Im Westpark 10 - 12
35435 Wettenberg

+49 (0) 641/68690-126
E-Mail: cgs@pvatepla.com

 

 

 

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