The result is a silicon crystal ingot that is either positively (p-type) or negatively charged (n-type). Slices of the ingot approximately 1/30th of an inch thick are cut from this "crystal salami ...

The Recharged Czochralski (RCz) crystal growth process ... limited Bulk Lifetimes in Industrial Czochralski-Grown n-Type Silicon Ingots with Melt Recharging,” published in Solar Energy ...