9N polysilicon wafer , made into quality cell with 3.85W-4.5W, no broken , no stain, from famous japanese solar company, low price 156* 156 Polycrystalline Silicon solar wafer, high efficiency multi solar wafer 156mm poly solar wafer Model: P multi solar wafer 156mm multi solar wafer Type: P Dopant: Boron Resistivity: 1-3( ohm.cm) Dimension: 156 x 156± 0.5 ( mm) Thickness: 200± 20 ( ¼ m) Oxygen Content: d8.0 x 1017 Carbon Content: d1.0 x 1018 Minority Carrier Lifetime: e2 ( us) Microcrystal: