On the scrap of FZ silicon
The parameters of the scrap :
1. Material of the scrap - FZ silicon (n-type ).
2. Resistivity - > 30 Ohm*cm.
3. Form and dimensions - cylindrical pieces with a diameter more than 1 inch and with length more them 5 mm or arbitrary form piece with minimal mass 100 g and minimal linear dimension 50 mm.
4. Surface - without mechanical non-silicon contaminations.
5. Carbon (C), tungsten (W) and the other contaminations by electrodes - < 2 x10 16 cm -3.
6. Structure - monocrystalline, polycrystalline,
7. Quantity - 300-500 kg / quarter,