Casting high-performance hybrid Si ingot by induced partition layer

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2025-03-25 DOI:10.1016/j.solmat.2025.113599

Qi Lei , Liang He , Jianmin Li , Jinbing Zhang , Dongli Hu

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引用次数: 0

Abstract

This study presents a novel hybrid casting method for silicon ingot preparation, designed to overcome the challenges of unstable crystal quality, low monocrystallinity, and high defect density in large-scale production of cast monocrystalline silicon (mono-Si). The approach introduces a partition layer that effectively suppresses competitive growth between multicrystalline silicon (mc-Si) and mono-Si, thereby enhancing the proportion and quality of the mono-Si region. Experimental results demonstrate that the mono-Si region of the hybrid ingot exhibits nearly complete monocrystallinity, while the partition layer reduces crystal defect propagation, leading to improved minority carrier lifetime distribution in the wafers. Solar cells fabricated from the hybrid ingot exhibit efficiency close to Cz-Si wafers, with enhanced uniformity. While the cell efficiency of cast mono-Si remains slightly lower than CZ-Si, the method significantly reduces production costs while maintaining high yield, offering a viable pathway for scalable and cost-effective photovoltaic silicon production.

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来源期刊

Solar Energy Materials and Solar Cells 工程技术-材料科学：综合

CiteScore

12.60

自引率

11.60%

发文量

513

审稿时长

47 days

期刊介绍： Solar Energy Materials & Solar Cells is intended as a vehicle for the dissemination of research results on materials science and technology related to photovoltaic, photothermal and photoelectrochemical solar energy conversion. Materials science is taken in the broadest possible sense and encompasses physics, chemistry, optics, materials fabrication and analysis for all types of materials.