When researchers need the higher purity Silicon, they use FZ Silicon substrates instead of Czochralski grown silicon.
Or simply put, Float Zone Si is most ly used low volume applications that require high-efficiency while CZ Silicon is used for high volume, less expensive applications.
Below are just some of the Float Zone wafers that we have in stock.
|FZ Si Dia||Type/Dopant||Orientation||Resistivity
|25.4mm||Undoped||(100)||>2,000||SSP||280||Intrinsic Float Zone|
|50.8mm||N/Ph||(111)||>200||SSP||200||2 FLats back-side Alkaline etched|
|76.2mm||Undoped||(100)||>5,000||SSP||500||Undoped Float Zone|
|100mm||P/B||(111)||40-60||SSP||255||Buy as few as one|
|150mm||Undoped||(100)||>10,000||DSP||650um||Hard to Find|
|200mm||Undoped||(100)||>1,000||SSP||725um||FZ SI TTV <6um, Bow <10um,Warp<25um|