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Buy Solar Silicon

Date Posted :	2008-12-03
Valid until :	2008-12-05

Membership :	Free member
Registration Date :	2008-09-02
Country/Region :	China

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Specification of monocrystalline silicon scrap.
Parameter        Unit of measure        Parameter point
The minimum weight of a piece, not less        gram        30
Polarity of conductivity                 P-type (Boron)
Specific resistance (R)        Ohm?m        0,5?
Concentration of carbon, no more        at/cm3        1?017
Purity                 99,9999 (6N)
Has no impurities of graphite, quartz, silicon carbide or other mechanical impurities. The surface of the pieces has no visible traces of pollution.

Specification of silicon polycrystalline.
Dirt:        Concentration
        I type        II type
Acceptors (Boron)        <0,1 ppba        <1 ppba
Donors (Phosphorus)        <0,5 ppba        <2 ppba
Carbon        <0,1 ppma        <1 ppma
Shape of polycrystalline silicon: rod or lump
Sizes of pieces for lump polycrystalline silicon:
< 3 mm        No more than 2%
3mm-125mm        Not less than 98%
The typical size of pieces        65- 125 mm
On the surface of the pieces and lumps silicon polycrystalline there are no traces of oxides, oxidized rings of growth on the break or cut as well as there are no foreign particulates and pollutions.

If you can offer it please do not be late

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