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首页> 外文会议>NATO Advanced Study Institute on Photovoltaic and Photoactive Materials - Properties, Technology and Applications Sep 9-21, 2001 Sozopol, Bulgaria >CRYSTALLINE SILICON P-N JUNCTION SOLAR CELLS - EFFICIENCY LIMITS AND LOW-COST FABRICATION TECHNOLOGY
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CRYSTALLINE SILICON P-N JUNCTION SOLAR CELLS - EFFICIENCY LIMITS AND LOW-COST FABRICATION TECHNOLOGY

机译：晶体硅P-N结太阳能电池-效率极限和低成本制造技术

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摘要

Crystalline silicon solar cells almost completely dominate worldwide solar cell production. Excellent stability and reliability, plus continuous development in cell structure and processing, make it very likely that crystalline silicon cells will remain in this position for several years. Laboratory solar cells, processed by means of sophisticated techniques originating from the microelectronics industry and using high quality FZ-Si substrates, have yielded energy conversion efficiencies of over 24%. An overview of the latest achievements in low-cost processing technologies of industrial-type large area multicrystalline silicon solar cells has been given. A generic cell process based on isotropic texturing, a shallow emitter or single diffusion selective emitter, combined with screen printed metallization fired through a PECVD SiN_x anti-reflection coating has been commonly accepted as a universal low-cost process. A significant efficiency enhancement, relative to existing production processes, has been measured in the cases of all available substrate materials, including silicon ribbons. Novel dedicated fabrication equipment for isotropic texturing, emitter diffusion and PECVD SiN_x deposition has been developed and implemented, thereby removing the processing bottlenecks. As a result, the efficiency and throughput of industrial screen printed multi-Si solar cells can be increased far beyond the state-of-the-art production cells. The technological requirements linked to cell design and low-cost processing techniques needed for drastic cost reduction of multicrystalline silicon solar cells down to 1$/Wp have been briefly described. To keep bulk crystalline silicon solar cells competitive with thin film technologies, low cost processing techniques for rear surface passivation and light trapping must be developed and applied to thin substrates.
机译：晶体硅太阳能电池几乎完全主导了全球太阳能电池的生产。出色的稳定性和可靠性，以及电池结构和工艺的不断发展，使得晶体硅电池很可能会在这一位置上保留数年。实验室太阳能电池通过微电子行业的先进技术加工而成，并使用高质量的FZ-Si衬底，其能量转换效率超过24％。概述了工业型大面积多晶硅太阳能电池低成本加工技术的最新成果。基于各向同性纹理化，浅发射器或单扩散选择性发射器以及通过PECVD SiN_x减反射涂层烧制的丝网印刷金属层的通用电池工艺已被普遍接受为低成本的通用工艺。在所有可用的基板材料（包括硅带）的情况下，相对于现有生产工艺，已经实现了显着的效率提升。已经开发并实现了用于各向同性纹理化，发射极扩散和PECVD SiN_x沉积的新型专用制造设备，从而消除了处理瓶颈。结果，可以大大提高工业丝网印刷的多晶硅太阳能电池的效率和产量。简要描述了与电池设计相关的技术要求和将多晶硅太阳能电池的成本大幅降低至1 $ / Wp所需的低成本处理技术。为了保持体晶硅太阳能电池与薄膜技术的竞争力，必须开发用于背面钝化和光捕获的低成本处理技术，并将其应用于薄基板。

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