SOLAR CELLS

摘要

A photovoltaic cell comprising a semiconductor wafer comprising a front, light receiving surface and an opposite back surface, a passivation layer on at least the back surface, a doped layer opposite in conductivity type to the wafer over the passivation layer, an induced inversion layer, a dielectric layer over the doped layer, and one or more localized emitter contacts and one or more localized base contacts on at least the back surface extending at least through the dielectric layer; and a neutral surface photovoltaic cell comprising a semiconductor wafer comprising a front, light receiving surface and an opposite back surface, neutral passivation layer on at least the back surface, a dielectric layer over the passivation layer, and one or more localized emitter contacts and one or more localized base contacts on at least the back surface extending at least through the dielectric layer.