Temperature-dependent degradation and mixed-waveform AC-bias recovery behavior in AgCu-Metallized HJT solar cells

IF 7.4 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments Pub Date : 2026-09-01 Epub Date: 2026-09-08 DOI:10.1016/j.seta.2026.105375

Hasnain Yousuf, Alamgeer, Rafi ur Rahman, Mengmeng Chu, Maha Nur Aida, Hyejeong Jin, Muhammad Quddamah Khokhar, Junsin Yi

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引用次数: 0

Abstract

Silicon heterojunction (HJT) solar cells require low-temperature metallization because their passivation layers are sensitive to excessive thermal exposure. This study evaluates the temperature-dependent electrical behavior, short-term temperature/light-induced degradation, and mixed-waveform AC-bias recovery of HJT cells metallized with a 60:40 AgCu conductive paste. The optimized cell exhibited

J_{s c}

= 39.20 mA

{c m}^{- 2}

V_{o c}

= 0.742 V, FF = 77.35%, and

η

= 22.48%. From 25 to 85 °C,

J_{s c}

increased slightly, whereas

V_{o c}

, FF, and efficiency decreased, with temperature coefficients of + 0.0387, −0.217, −0.0591, and − 0.236% °C⁻¹, respectively. After 48 h under 1-sun illumination at 85 °C,

J_{s c}

V_{o c}

, FF, and efficiency retained 95.55%, 98.55%, 95.65%, and 94.20% of their initial values. Following 36 h of mixed-waveform AC-bias treatment, the corresponding values recovered to 99.34%, 99.68%, 99.18%, and 99.20%. These results demonstrate substantial device-level electrical recovery; however, its microscopic origin requires contact-resistivity, lifetime, structural, chemical, and waveform-control measurements.

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agcu金属化HJT太阳能电池的温度依赖性退化和混合波形交流偏置恢复行为

硅异质结（HJT）太阳能电池需要低温金属化，因为它们的钝化层对过度的热暴露敏感。本研究评估了用60:40 AgCu导电浆料金属化的HJT电池的温度依赖性电学行为、短期温度/光诱导降解和混合波形交流偏置恢复。优化后的电池jsc = 39.20 mA cm-2, Voc= 0.742 V, FF = 77.35%, η = 22.48%。从25°C到85°C， Jsc略有增加，而Voc、FF和效率下降，温度系数分别为+ 0.0387、- 0.217、- 0.0591和- 0.236%°C - 1。在85°C的单太阳光照下48 h后，Jsc、Voc、FF和效率保持了初始值的95.55%、98.55%、95.65%和94.20%。混合波形交流偏置处理36 h后，相应值恢复到99.34%、99.68%、99.18%和99.20%。这些结果证明了大量的设备级电回收；然而，其微观起源需要接触电阻率，寿命，结构，化学和波形控制测量。

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来源期刊

Sustainable Energy Technologies and Assessments Energy-Renewable Energy, Sustainability and the Environment

CiteScore

12.70

自引率

12.50%

发文量

1091

期刊介绍： Encouraging a transition to a sustainable energy future is imperative for our world. Technologies that enable this shift in various sectors like transportation, heating, and power systems are of utmost importance. Sustainable Energy Technologies and Assessments welcomes papers focusing on a range of aspects and levels of technological advancements in energy generation and utilization. The aim is to reduce the negative environmental impact associated with energy production and consumption, spanning from laboratory experiments to real-world applications in the commercial sector.