19.4 Efficient Bifacial Solar Cell with Spin-on Boron Diffusion

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• 作者：Sebastian Barth ; Oliver Doll ; Ingo Koehler ; Kristin Neckermann ; Michael Blech ; Alex ; er Lawerenz ; Alex ; er Edler ; Radovan Kopecek ; Joerg J. Schneider
• 关键词：Spin-on diffusion ; Boron diffusion ; Bifacial solar cell
• 刊名：Energy Procedia
• 出版年：2013
• 出版时间：2013
• 年：2013
• 卷：38
• 期：Complete
• 页码：410-415
• 全文大小：691 K

文摘

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 J_0e. Comparable J_0e 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.