Description

Admixtures: Concentration I type II type Acceptors (Boron) <0, 1 ppba <1 ppba Donors (Phosphorous) <0, 5 ppba <2 ppba Carbon <0, 1 ppma <1 ppma Form: bar or lump polycrystalline silicon Chunks sizes for lump polycrystalline silicon: < 3 mm Not more than 2% 3mm **5mm Not less than *8% Typical chunks sizes *****5 mm Surface purity Absence on surface of polycrystalline silicon rods and chunks oxide traces, oxidized growth rings in sharp turn or at cut, also other foreign inclusions and impurities.