强脉冲光在硅异质结太阳能电池后端加工中的应用

2020 47th IEEE Photovoltaic Specialists Conference (PVSC) Pub Date : 2020-06-14 DOI:10.1109/PVSC45281.2020.9300448

J. Schube, T. Fellmeth, M. Weil, S. Nold, R. Keding, S. Glunz

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引用次数: 0

摘要

在硅异质结太阳能电池的后端加工中，强脉冲光(IPL)能够完全取代热退火(固化和触点形成)。为了证明这一点，评估了全尺寸硅异质结(SHJ)电池与ipl加工的丝网印刷金属触点。这种电池的转换效率高达23.0%。平均而言，ipl退火的SHJ电池比热处理的SHJ电池性能好0.3-0.4%abs，特别是由于更高的开路电压和填充因子。此外，IPL提供高吞吐量和低占用空间。与最先进的热退火相比，这导致拥有成本降低6%的潜力。

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Intense Pulsed Light in Back End Processing of Silicon Heterojunction Solar Cells

Intense pulsed light (IPL) is capable of entirely replacing thermal annealing (curing and contact formation) within back end processing of silicon heterojunction solar cells. In order to demonstrate this, full-size silicon heterojunction (SHJ) cells with IPL-processed screen-printed metal contacts are evaluated. Such cells reach conversion efficiencies of up to 23.0%. On average, IPL-annealed SHJ cells outperform their thermally treated pendants by 0.3-0.4%abs, in particular because of higher open-circuit voltages and fill factors. Moreover, IPL offers high throughput and low footprint. This results in a cost of ownership reduction potential of 6%rel compared to state-of-the-art thermal annealing.

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2020 47th IEEE Photovoltaic Specialists Conference (PVSC)

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