首页> 外文会议>European Photovoltaic Solar Energy Conference and Exhibition >NOVEL TECHNOLOGY APPROACH BASED ON STANDARD QUALITY MC WAFERS ACHIEVING SOLAR CELL EFFICIENCIES SIGNIFICANTLY ABOVE 18 IN AN INDUSTRIAL PRODUCTION ENVIRONMENT
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NOVEL TECHNOLOGY APPROACH BASED ON STANDARD QUALITY MC WAFERS ACHIEVING SOLAR CELL EFFICIENCIES SIGNIFICANTLY ABOVE 18 IN AN INDUSTRIAL PRODUCTION ENVIRONMENT

机译:在工业生产环境中,基于标准质量MC的新型技术方法使太阳能电池的效率明显提高了18%

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摘要

In this paper, we report on the results from the implementation of the RCT Solutions Multi PERCT technology into an industrial pilot production of a Chinese cell manufacturer. With this technology upgrade, based on standard mass production equipment in existing multi crystalline solar cell production, it is possible to obtain solar cell efficiencies above 18% on standard wafer material. The process sequence utilizes all production equipment of a standard production line for screen printed full area Al-BSF solar cells, which is also used for the passivation of the rear side (PERC). Prior to the passivation step the cell has been totally diffused (PERCT) with a cost effective BBr3 boron diffusion in an upgraded standard diffusion tool. Furthermore, a laser is used to open the rear side contacts prior to screen printing of the metallization. A unique feature of this technology is the manufacturing of bifacial multi crystalline solar cells with screen printed finger grid on the rear side instead of a full area Al-BSF. With this bifacial cell type efficiencies up to 18% (front side) are achieved. Besides the additional power generation from the rear side the paste consumption is reduced and bow is avoided.
机译:在本文中,我们报告了将RCT Solutions Multi PERCT技术实施到中国电池制造商的工业试生产中的结果。通过此技术升级,基于现有多晶太阳能电池生产中的标准批量生产设备,可以在标准晶圆材料上获得高于18%的太阳能电池效率。该工艺流程利用了标准生产线的所有生产设备,用于丝网印刷全面积Al-BSF太阳能电池,该电池还用于背面(PERC)的钝化。在钝化步骤之前,已在升级的标准扩散工具中以具有成本效益的BBr3硼扩散对电池进行了完全扩散(PERCT)。此外,在金属丝网印刷之前,使用激光打开后侧触点。这项技术的独特之处在于其双面多晶硅太阳能电池的制造,其背面具有丝网印刷的指状栅,而不是全面积的Al-BSF。通过这种双面电池类型,可以实现高达18%(正面)的效率。除了从背面产生额外的能量外,还减少了锡膏的消耗并避免了翘曲。

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