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Ion-implanted high-efficiency solar cells on cast monocrystalline silicon

机译:在铸造单晶硅上注入离子的高效太阳能电池

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This paper demonstrates high-efficiency solar cells made on commercial grade cast monocrystalline (cast-mono) silicon using ion implantation. 18.9% efficient solar cells on 156 mm square cast-mono wafers from Canadian Solar are fabricated featuring an oxide passivated emitter, aluminum back-surface field and full industrial processing. Further investigation revealed that the cast-mono cells can benefit from the increased short-circuit current density due to random pyramid texture, compared to isotexture, even down to 60% area of <100> grain on a wafer. This paper highlights the importance of improving the quality and yield of cast-mono wafers and the benefits of ion implant technology to produce high-efficiency cast-mono cells at lower cost. Also highlighted is the importance of increased light trapping from alkaline texture of cast-mono wafers.
机译:本文演示了使用离子注入在商业级铸造单晶(铸造单晶)硅上制造的高效太阳能电池。阿特拉斯太阳能公司在156毫米见方的铸造单晶硅片上制造了效率为18.9%的太阳能电池,其特点是具有氧化物钝化的发射极,铝背面场和完整的工业加工工艺。进一步的研究表明,与异质纹理相比,铸型单晶电池可受益于由于随机金字塔形纹理而增加的短路电流密度,甚至可降低晶圆上<100>晶粒的60%的面积。本文强调了提高铸件单晶片的质量和成品率的重要性,以及离子注入技术以较低的成本生产高效铸件单电池的好处。还突出显示了增强铸型单晶片的碱性纹理捕获光的重要性。

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