Closing the gap between n- and p-type silicon heterojunction solar cells: 24.47% efficiency on lightly doped Ga wafers

Article Energy & Fuels

High Lifetime Ga-Doped Cz-Si for Carrier-Selective Junction Solar Cells

Joerg Horzel et al.

Summary: Industrial mass production of solar cells is shifting towards carrier-selective junction solar cells with passivating contacts. The use of Ga-doped p-type Cz-Si material is still a viable option and offers the advantage of lower wafer costs.

SOLAR RRL (2023)

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Article Energy & Fuels

Performance degradation of commercial Ga-doped passivated emitter and rear cell solar modules in the field

Chuanke Chen et al.

Summary: The field degradation of gallium-doped PERC solar modules was found to be smaller than that of stabilized boron-doped PERC solar modules, possibly due to the combined effects of light-induced degradation and light and elevated temperature-induced degradation.

PROGRESS IN PHOTOVOLTAICS (2022)

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Article Energy & Fuels

Influence of the Bulk Resistivity on Silicon Heterojunction Solar Cells and Module Reliability

Andre Augusto et al.

Summary: Recent developments in surface passivation technology have enabled the use of less doped substrates in silicon solar cells. In this study, we investigate the impact of bulk resistivity on the performance and reliability of silicon cells. We find that higher resistivities lead to increased breakdown voltages and improved module reliability. Moreover, cells with higher resistivities recover faster after light soaking.

SOLAR RRL (2022)

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Article Energy & Fuels

Influence of cell edges on the performance of silicon heterojunction solar cells

V Giglia et al.

Summary: This study highlights the significant recombination activity at the edges of silicon heterojunction solar cells and suggests that mitigating this recombination can lead to higher cell efficiencies. The research provides guidelines for reducing performance losses at the full-size and cut-cell scale, including minimizing the TCO-free region and adjusting the c-Si bulk resistivity.

SOLAR ENERGY MATERIALS AND SOLAR CELLS (2022)

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Article Energy & Fuels

Towards an industrial in-line solution for efficient post-treatment of silicon heterojunction solar cells

J. Veirman et al.

Summary: This study aims to develop a fast post-treatment method to improve the performance of Enel Green Power (EGP) solar cells. By using a specially designed LED tool for HJT cells, the treatment's impact on performance and reliability is investigated, and potential additional benefits are assessed.

SOLAR ENERGY MATERIALS AND SOLAR CELLS (2022)

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Article Energy & Fuels

Silicon wafers for industrial n-type SHJ solar cells: Bulk quality requirements, large-scale availability and guidelines for future developments

J. Veirman et al.

Summary: This work investigates the wafer bulk requirements for industrial amorphous/crystalline n-type silicon heterojunction cells, exploring the variations in efficiency with bulk carrier lifetime, dark resistivity, and their ratio. Validation experiments and simulations are used to determine wafer specifications for targeted efficiency, with considerations for future efficiency improvements and commercial monocrystalline wafer availability. The study also assesses the potential for stable high efficiency device production and forecasts the evolution of wafer requirements as cell efficiency approaches 25%.

SOLAR ENERGY MATERIALS AND SOLAR CELLS (2021)

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Article Energy & Fuels