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SLASH concept: A novel approach for simplified interdigitated back contact solar cells fabrication

机译:SLASH概念:简化叉指式背接触太阳能电池制造的新方法

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摘要

In this study a novel high efficiency crystalline silicon (c-Si) solar cell concept is presented. It combines Interdigitated Back Contact (IBC) structures with Silicon Heterojunction (Si-HJ) technology through the use of Laser assisted patterning steps. The SLASH (Structuring by Laser Ablation of Silicon Heterojunction) IBC cell shows a simplified geometry and a fabrication process compatible with mass production. SLASH IBC cells have been fabricated using optimized parameters for a-Si:H layers patterning and screen printed metallization. The c-Si surface morphology (polishing and texturation process) is shown to have a great impact on the cells parameters. Almost the same cell performances are obtained on alkaline and chemical-mechanical polished surfaces. An efficiency of 19.0% has been obtained on 5*5 cm2 devices proving the high efficiency potential of this simplified IBC structure.
机译:在这项研究中,提出了一种新型的高效晶体硅(c-Si)太阳能电池概念。它通过使用激光辅助的构图步骤,将叉指背接触(IBC)结构与硅异质结(Si-HJ)技术结合在一起。 SLASH(通过激光烧蚀硅异质结来构造)IBC单元具有简化的几何形状和与批量生产兼容的制造工艺。 SLASH IBC电池是使用用于a-Si:H层构图和丝网印刷金属化的优化参数制造的。结果表明,c-Si表面形态(抛光和织构化过程)对晶胞参数有很大影响。在碱性和化学机械抛光的表面上可获得几乎相同的电池性能。在5 * 5 cm2的器件上已获得19.0%的效率,证明了这种简化的IBC结构的高效率潜力。

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