All screen printed mass produced Silicon Ink selective emitter solar cells

The Innovalight Cougar™ Platform is a portfolio of simple to implement technologies that, when combined with Innovalight Silicon Ink, enables the manufacture of a selective emitter solar cell with a non-masking single-step diffusion. Innovalight Silicon Ink is a highly engineered silicon nanoparticle colloidal dispersion, implemented for both high volume ink-jet and screen-print deposition, and further optimized to be produced and delivered in commercial volumes. With the addition of an industrial high throughput screen printing system, used to deposit and dry the Silicon Ink, the Cougar Platform requires the same tools and materials used in a standard screen printed solar cell manufacturing line. Consequently, the Cougar Platform improves the efficiency of standard screen printed solar cells by about 1% absolute at a manufacturing cost lower (in terms of $/W) than that of conventional homogeneous emitter front-contact solar cells. Cell efficiencies, on 125mm × 125mm Cz-Si wafers, of up to 19% have been recorded for Cougar cells processed initially at the Innovalight 10MW pilot line. Mass production data coming from the JA Solar manufacturing site, demonstrate median cells efficiencies of 18.6%.