Improving silicon solar cell performance with aluminum-doped polysilicon passivating contacts

An international research group has developed a novel technique enabling the creation of contacts at low temperatures. The novel contact types are reportedly able to enhance cell efficiency by up to 3%. Scientists from Australia and the United Kingdom have developed a novel method for constructing localized rear contacts on p-type silicon absorbers. The proposed process utilizes aluminum (Al) doped and induced polycrystalline silicon (poly-Si) formed at low temperatures. "This approach avoids the high-temperature processes required for poly-Si formation and the toxic gases involved in in-situ ...

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