BakerClean™ PV-160

06 May 2009 | Covidien, Mallinckrodt Baker
Nominations: Best process technology c-Si cell manufacturing lines

Description

Developed in cooperation with Energy research Center of the Netherlands (ECN), BakerClean PV-160 surface modifier improves cell conversion efficiency by enabling an enhanced cell response to blue light.  Modifying surface properties of c-Si solar cells after emitter formation, BakerClean PV-160 surface modifier provides photovoltaic cell manufacturers with a powerful surface modification chemistry proven to increase the value of their solar cells by improving absolute cell efficiency by up to 0.3%.

Innovative Aspect

In addition to removing residual phospho silicate glass (PSG) left behind following a standard hydrofluoric acid (HF) bath, BakerClean PV-160 surface modifier is the only commercially available cleaning chemistry able to deliver the high-value, competitive advantage of improved cell efficiency.  Solar cells made using BakerClean PV-160 surface modifier produce more electricity and are more valuable than cells made without the product.

Benefits

·    Produces more efficient solar cells that provide higher electrical output and are more valuable than cells made without BakerClean PV-160 surface modifier.
·    A 100% water soluble formulation eliminates the need for an intermediate solvent rinse, decreasing total processing time and cost
·    Long bath life, typically greater than 80 hours; process optimization resulted in bath lives of more than 100 hours in high volume manufacturing
·    A self-limiting surface modification process designed to slow down with treatment time, thereby diminishing the chance of destructive processing.

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