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Peng C.,Apollo Precision Equipment Ltd Co. | Zhang J.,Apollo Precision Equipment Ltd Co. | Hu A.,Apollo Precision Equipment Ltd Co. | Qu M.,Apollo Precision Equipment Ltd Co. | And 8 more authors.
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2013

Applying the self-designed and made LPCVD equipment and self-developed growth process of boron-doped zinc oxide (BZO) TCO glasses with strong light trapping effect, amorphous/nano-crystalline silicon tandem cells had been grown using optimized processes. For comparison, similar cells have also been grown on commercial FTO coated glasses. It has been found that the strong light trapping effect of BZO could introduce considerable current gain to the cells, especially to the bottom cells. QE measurement results show that Jsc of bottom cell based on BZO could be more than 1 mA/cm2 larger than that based on FTO. Furthermore, by applying new back contact technology, metal back electrode has been successfully integrated with the front electrode formed by high-haze BZO film, and amorphous/nano-crystalline silicon tandem cells with efficiency of 12.2% (0.79 m2) has been achieved.


Xu X.,Apollo Precision Equipment Ltd Co. | Zhang J.,Apollo Precision Equipment Ltd Co. | Hu A.,Apollo Precision Equipment Ltd Co. | Yu C.,Hanergy Holding Group | And 9 more authors.
Materials Research Society Symposium Proceedings | Year: 2013

We conduct a comparative study mainly on two types of nc-Si based solar cell structures, a-Si/a-SiGe/nc-Si triple-junction and a-Si/nc-Si double-junction. We have attained comparable initial efficiency for the both solar cell structures, 10.8-11.8% initial total area efficiency (85-95W over an area of 0.79 m2). For better compatibility to our installed manufacturing equipment, we deposit a-Si and a-SiGe component cells with the existing deposition machines. Only nc-Si bottom component cells are prepared in separate deposition machines tailored for nc-Si process. Material properties of nc-Si and TCO films are also studied by Raman spectra, SEM, and AFM. © 2013 Materials Research Society.

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