Stable Passivation of Cut Edges in Encapsulated N-Type Silicon Solar Cells Using Nafion Polymer

Chen, Ning; Tune, Daniel D.; Buchholz, Florian; Roescu, R.; Zeman, Miro; Isabella, Olindo; Mihailetchi, Valentin D.

doi:10.2139/ssrn.4367168

Cited by 2 publications

(3 citation statements)

References 34 publications

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“…ISC also used PL( I ) and Quokka3 simulations but focused on IBC cells and a variety of different cut cell sizes (1/1, 1/2, 1/4, 1/8) including 1 or 2 side cut and cut over n + or p + region. The smallest cut cell, with 2 side cut over the emitter (p+) region is the most affected by the cut 46 . It showed (experimentally proven) that the inherent feature of IBC cells to allow for sparing the emitter upon cutting vastly reduces the cut cell losses.…”

Section: Resultsmentioning

confidence: 99%

“…The smallest cut cell, with 2 side cut over the emitter (p+) region is the most affected by the cut. 46 It showed (experimentally proven) that the inherent feature of IBC cells to allow for sparing the emitter upon cutting vastly reduces the cut cell losses. Similar conclusion was drawn by CEA, where they used Silvaco Atlas package to simulate cut cell performance using their threeunit cell model that distinguishes between a core unit cell, a native edge cell, and a cut edge cell, where recombination of different surfaces of unit cells are described by a defective interface density.…”

Section: Advanced Characterization Of Edge Losses Before and After Ed...mentioning

confidence: 99%

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Overview of key results achieved in H2020 HighLite project helping to raise the EU PV industries' competitiveness

Tous

Govaert

Harrison

et al. 2023

Progress in Photovoltaics

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The EU crystalline silicon (c‐Si) PV manufacturing industry has faced strong foreign competition in the last decade. To strive in this competitive environment and differentiate itself from the competition, the EU c‐Si PV manufacturing industry needs to (1) focus on highly performing c‐Si PV technologies, (2) include sustainability by design, and (3) develop differentiated PV module designs for a broad range of PV applications to tap into rapidly growing existing and new markets. This is precisely the aim of the 3.5 years long H2020 funded HighLite project, which started in October 2019 under the work program LC‐SC3‐RES‐15‐2019: Increase the competitiveness of the EU PV manufacturing industry. To achieve this goal, the HighLite project focuses on bringing two advanced PV module designs and the related manufacturing solutions to higher technology readiness levels (TRL). The first module design aims to combine the benefits of n‐type silicon heterojunction (SHJ) cells (high efficiency and bifaciality potential, improved sustainability, rapidly growing supply chain in the EU) with the ones of shingle assembly (higher packing density, improved modularity, and excellent aesthetics). The second module design is based on the assembly of low‐cost industrial interdigitated back‐contact (IBC) cells cut in half or smaller, which is interesting to improve module efficiencies and increase modularity (key for application in buildings, vehicles, etc.). This contribution provides an overview of the key results achieved so far by the HighLite project partners and discusses their relevance to help raise the EU PV industries' competitiveness. We report on promising high‐efficiency industrial cell results (24.1% SHJ cell with a shingle layout and 23.9% IBC cell with passivated contacts), novel approaches for high‐throughput laser cutting and edge re‐passivation, module designs for BAPV, BIPV, and VIPV applications passing extended testing, and first 1‐year outdoor monitoring results compared with benchmark products.

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Section: Resultsmentioning

confidence: 99%

Section: Advanced Characterization Of Edge Losses Before and After Ed...mentioning

confidence: 99%

Overview of key results achieved in H2020 HighLite project helping to raise the EU PV industries' competitiveness

Tous

Govaert

Harrison

et al. 2023

Progress in Photovoltaics

Self Cite

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“…However, they generally turn out to be unstable, time consuming, and expensive. Many researches have been done over the past years on edge passivation 6,7 . Those methods are generally either expensive or complicated with efficiency improvement of only 0.2~0.3% abs (absolute efficiency).…”

Section: Introductionmentioning

confidence: 99%

Contactless edge for edge recombination optimization in solar cell

Xue,

Yang,

Zhao

et al. 2024

Micro & Optical Tech Letters

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As the conversion efficiency of solar cell approaching its theoretical limits, reducing the power loss during the collection and transmission process is a promising way to improve the performance of solar cell. Cleaved edges create recombination centers, causing up to 0.8%abs (absolute efficiency) of power loss or even more for 156 × 156 mm silicon solar cell. Due to the complexity of edge passivation technique, alternative methods are desired. This article proposes a method to minimize this problem. It is found that most of the recombination current of edge comes from the recombination near the contact and the space charge region (SCR). As a result, keeping the cleaved edge a certain distance away from the contacts and SCR can improve performance effectively. On the other hand, contactless edge can reduce the recombination from the SCR without extra manufacturing difficulty. The results indicate the edge recombination loss can be reduced to less than 0.4%abs after the distance is optimized appropriately.

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Stable Passivation of Cut Edges in Encapsulated N-Type Silicon Solar Cells Using Nafion Polymer

Cited by 2 publications

References 34 publications

Overview of key results achieved in H2020 HighLite project helping to raise the EU PV industries' competitiveness

Overview of key results achieved in H2020 HighLite project helping to raise the EU PV industries' competitiveness

Contactless edge for edge recombination optimization in solar cell

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