19.4 efficient bifacial solar cell with spin-on boron diffusion

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Abstract

Up to date most spin-on diffusion sources based on wet chemical created boron-silicate glass (BSG) lead to a strongly degraded carrier lifetime after diffusion. In this study the implication of a spin-on boron diffusion source is applied to the fabrication of large area n-type CZ bifacial solar cell and the performance of the spin-on source is compared to a BBr3 boron diffusion concerning the resulting lifetime and emitter saturation current J0e. Comparable J0e values and a comparable lifetime have been achieved resulting in a top efficiency of 19.38% in comparison to a top efficiency of 19.60% achieved by BBr3 diffusion. © 2013 The Authors.

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Barth, S., Doll, O., Koehler, I., Neckermann, K., Blech, M., Lawerenz, A., … Schneider, J. J. (2013). 19.4 efficient bifacial solar cell with spin-on boron diffusion. In Energy Procedia (Vol. 38, pp. 410–415). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2013.07.297

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