n-type silicon material

Abstract

n-type silicon feedstock and wafers are key photovoltaic (PV) enabling technologies for high-efficiency solar cells. This chapter reviews the rapidly evolving field of growth technologies, wafering technologies, and materials engineering methods. First, we review key silicon sources for n-type solar cells and present various recharging technologies. We then present the impact of impurities on silicon solar cells with a focus on metallic impurities, oxide precipitates, and thermal donors. We then present strategies to mitigate the impact of metallic impurities via gettering. Lastly, we evaluate the cost of ownership for n-type ingot growth and wafering. Show more