Study and mitigation of moisture-induced degradation in SHJ modules by modifying cell structure

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells Pub Date : 2025-03-07 DOI:10.1016/j.solmat.2025.113557

Lucie Pirot-Berson , Romain Couderc , Romain Bodeux , Frédéric Jay , Paul Lefillastre , Julien Dupuis

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引用次数: 0

Abstract

Silicon heterojunction (SHJ) modules are known for their high efficiency and are expected to gain significant market share in the coming years. In terms of reliability, SHJ technology can be sensitive to moisture-induced degradation and sodium-induced degradation from sodium ions released from the glass. In these degradation mechanisms, the different layers of the SHJ cell structure could play an important role that needs to be understood. This work investigates the moisture-induced degradation in SHJ modules under damp heat (DH) by varying the cell structure with different types and thicknesses of transparent conductive oxide (TCO). Due to the migration of sodium ions, the thinner the TCO layer, the higher the degradation induced. The protective effect of dielectric capping layers is also investigated, allowing at the same time to reduce the indium consumption, which is a crucial issue for SHJ cells. These layers provide protection against degradation. Finally, a schematic model is proposed to summarize the degradation mechanisms, including the effect of cell structure on them.

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通过改变细胞结构来研究和缓解SHJ模块中水分诱导的降解

硅异质结（SHJ）模块以其高效率而闻名，预计在未来几年将获得可观的市场份额。在可靠性方面，SHJ技术可以对玻璃释放的钠离子引起的水分诱导降解和钠诱导降解敏感。在这些降解机制中，SHJ细胞结构的不同层可能发挥重要作用，需要了解。本研究通过使用不同类型和厚度的透明导电氧化物（TCO）改变电池结构，研究了湿热（DH）条件下SHJ组件的湿致降解。由于钠离子的迁移，TCO层越薄，诱导的降解程度越高。同时还研究了介质封盖层的保护作用，从而减少铟的消耗，这是SHJ电池的一个关键问题。这些层提供防止退化的保护。最后，提出了一个示意图模型来总结降解机制，包括细胞结构对其的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.