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      Impact of organic particles from wafer handling equipment on silicon heterojunction pseudo-efficiency

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          Abstract

          Within this paper a systematic analysis of particle transfer onto SHJ Solar cell precursors by handling with suction cups and the impact on the pseudo efficiency is presented. The study establishes a correlation between particle area coverage and a resulting loss of pseudo solar cell parameters. The analysis was carried out on one hand by means of SEM measurements at the contact points between suction cup and wafer to quantify particle transfer and on the other hand by means of suns photoluminescence imaging measurements to evaluate the resulting losses. It is shown that the choice of contact material and the wafer temperature have a significant influence on the transferred particle number, their size and the resulting particle area coverage. A local electrical defect was observed at these particle-rich spots, which also affected a larger area around this insufficiently passivated region. This had a significant negative effect on the pseudo efficiency, which is more pronounced for increasing particle area coverage. If the particle density is increased by 0.1% within an area of 800 mm 2, the pseudo efficiency in this area decreases by almost 1.2% Relative. The correlation found can be used to predict an efficiency loss using standard photoluminescence images.

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          Contact and Rubbing of Flat Surfaces

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            Counterface topographical effects on the wear of polyetheretherketone and a polyetheretherketone-carbon fiber composite

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              Suns-PLI as a powerful tool for spatially resolved fill factor analysis of solar cells

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                Author and article information

                Journal
                epjpv
                https://www.epj-pv.org
                EPJ Photovoltaics
                EPJ Photovolt.
                EDP Sciences
                2105-0716
                17 October 2023
                17 October 2023
                2023
                : 14
                : ( publisher-idID: epjpv/2023/01 )
                : 29
                Affiliations
                Fraunhofer Institute for Solar Energy Systems (F-ISE), , Freiburg, Germany,
                Author notes
                Article
                pv230021
                10.1051/epjpv/2023023
                62380818-7dfb-414b-b829-99fc836970a0
                © A. Fischer et al., Published by EDP Sciences, 2023

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 06 June 2023
                : 08 August 2023
                : 13 September 2023
                Page count
                Figures: 12, Tables: 1, Equations: 3, References: 17, Pages: 8
                Categories
                Special Issue on ‘EU PVSEC 2023: State of the Art and Developments in Photovoltaics’, edited by Robert Kenny and João Serra
                High Efficiency Materials and Devices - New concepts
                Regular Article
                Custom metadata
                EPJ Photovoltaics 14, 29 (2023)
                yes
                2023
                2023
                2023

                Sustainable & Green chemistry,Materials technology,Semiconductors,Materials for energy,Technical & Applied physics,Renewable energy
                particles,passivation defects,handling,SHJ

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