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首页> 外文会议>European Photovoltaic Solar Energy Conference and Exhibition >BIFACIAL MULTICRYSTALLINE SOLAR CELLS WITH EFFICENCIES ABOVE 18 PROCESSED IN AN INDUSTRIAL PRODUCTION ENVIRONMENT
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BIFACIAL MULTICRYSTALLINE SOLAR CELLS WITH EFFICENCIES ABOVE 18 PROCESSED IN AN INDUSTRIAL PRODUCTION ENVIRONMENT

机译：在工业生产环境中加工高于18％以上的双脉肤多晶硅电池

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RCT Solutions GmbH developed its PERCT process for application on standard multi crystalline p- type wafer material as a cost effective alternative to the common AlOx based PERC technology. The PERCT cell architecture is based on a "passivated emitter rear totally diffused (PERT)" cell design. The totally diffused BSF is realized by a fast and cost effective BBr3 boron diffusion step in a standard diffusion tube furnace - prior to the back side passivation and protection by a PECVD SiN. No AlOx is used. A unique feature of this technology, enabled by the conductivity of the boron-diffused layer, is the option to prepare bifacial multi crystalline solar cells with a screen printed finger grid on the rear side. Particularly for mc-Si the availability of processes for the preparation of bifacial cells is very limited. In this paper we report about the latest results from trials in industrial production lines with both cell types - single facial and bifacial PERCT, but with a focus on bifacial cells. While the bifacial solar cell type was for the first time processed in a purely industrial environment, the trials with the single facial cells were continued with further improved efficiencies. Additionally the cost analysis of mc-Si bifacial solar cells has been refined and shows the lowest system cost compared to other bifacial solar cell types. For the single facial PERCT cells a top average efficiency of 18.7% and a 19.0% maximum efficiency for best cells was obtained. Bifacial solar cells reached a top average efficiency of 18.3% and a maximum efficiency of 18.6% (rear side 15.3%) measured on a conventional black chuck.
机译：RCT Solutions GmbH开发了其在标准多晶硅p型晶片材料上应用的PERCT方法，作为普通的Alox基础Perc技术的成本效果。 PERCT单元架构基于“钝化的发射极后部完全扩散（PERT）”单元设计。通过在标准扩散管炉中的快速且成本有效的BBR3硼扩散步骤来实现完全扩散的BSF - 通过PECVD SIN的背面钝化和保护。没有使用Alox。通过硼漫射层的电导率实现该技术的独特特征，是选择在后侧上用丝网印刷手指栅格制备双脉冲多晶太阳能电池的选项。特别是对于MC-SI，用于制备双环细胞的方法的可用性非常有限。在本文中，我们向工业生产线试验中的最新结果报告了细胞类型 - 单个面部和双相环，但重点在双子胞细胞上。虽然双面太阳能电池类型是在纯粹的工业环境中首次加工的同时，继续使用单一面部细胞的试验进行进一步提高效率。另外，与其他双面太阳能电池类型相比，MC-Si双面太阳能电池的成本分析已被精制，并显示最低系统成本。对于单个面部嵌位细胞，获得最佳细胞的最高平均效率为18.7％，最高效率为19.0％。双翼影子太阳能电池达到常见的黑色卡盘在常规黑色卡盘上测量的18.3％的最高平均效率为18.3％，最大效率为18.6％（后侧15.3％）。

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