Precio FOB
Obtener el precio más reciente12 / Kilogram
|1 Ton Minimum Order
País:
Russia
N º de Modelo:
5
Precio FOB:
12 / Kilogram Obtener el precio más reciente
Lugar de origen:
Russia
Precio de pedido mínimo:
12 per Kilogram
Cantidad de pedido mínimo:
1 Ton
Detalle de embalaje:
-
El tiempo de entrega:
1 week
Capacidad de suministro:
7 Ton per Month
Tipo de pago:
T/T, L/C
Grupo de productos :
-
Russia
Persona de contacto Victoria
Olympisky prospekt, Mytishi
Ingots are grown through a process known as Czochralski (CZ)
method. CZ ingot growth requires chunks of virgin
polycrystalline silicon which are placed in a quartz crucible along
with small quantities of elements called dopants - the most common
of which are boron, phosphorus, arsenic and antimony. The materials
are heated to a temperature above the melting point of silicon,
***0 degrees Celsius. Once the polycrystalline and dopant
combination has been liquefied, a single silicon crystal, the seed,
is positioned on top of the melt, barely touching the surface. The
seed has the same crystal orientation required in the finished
ingot. To achieve doping uniformity, the seed crystal and the
crucible of molten silicon are rotated in opposite directions. Once
conditions for the crystal growth have been met, the seed crystal
is slowly lifted out of the melt. Growth begins with a rapid
pulling of the seed crystal in order to minimize the number of
crystal defects within the seed at the beginning of the growing
process. The pull speed is then reduced to allow the diameter of
the crystal to increase. When the desired diameter is obtained the
growth conditions are stabilized to maintain the diameter. As the
seed is slowly raised above the melt, the surface tension between
the seed and the melt causes a thin film of the silicon to adhere
to the seed and then to cool. While cooling, the atoms in the
melted silicon orient themselves to the crystal structure of the
seed.
Once a polysilicon ingot is fully-grown, it is removed from the
quartz crucible from which it was pulled. The silicon scrap that
remains in the crucible after removal is called “pot
scrap”. The scrap is broken into chunks, and cleaned of any
residual quartz. The pot scrap can then be remelted into lower
grade silicon for a variety of utilizations.
País: | Russia |
N º de Modelo: | 5 |
Precio FOB: | 12 / Kilogram Obtener el precio más reciente |
Lugar de origen: | Russia |
Precio de pedido mínimo: | 12 per Kilogram |
Cantidad de pedido mínimo: | 1 Ton |
Detalle de embalaje: | - |
El tiempo de entrega: | 1 week |
Capacidad de suministro: | 7 Ton per Month |
Tipo de pago: | T/T, L/C |
Grupo de productos : | - |