The Electrical Contact Solution for Measuring Back Contact Solar Cells
DOI:
https://doi.org/10.52825/siliconpv.v1i.958Keywords:
Contacting, Back contact, IV MeasurementAbstract
Due to the cell design, it is challenging to measure back contact cells. In this study, we have designed and tested a contact chuck based on printed circuit board (PCB) technology. Both full cells and cut Interdigitated Back Contact (IBC) cells were tested and compared to a conventional spring-loaded probes based measurement chuck. Results show that IV parameters, especially fill factor (FF), can be measured with high accuracy and repeatability. In this case, the FF results are closer to the FF of modules. The chuck can also be used for other measurements, for example, electroluminescence and spectral response. The PCB layout can be adjusted according to the cell design, providing a more flexible, faster, and cost-effective approach than the traditional measurement chuck. The technology is suitable for measuring back contact cells in lab environments and in industry.
Downloads
References
C. Schinke et al., "Contacting interdigitated back-contact solar cells with four busbars for precise current–voltage measurements under standard testing conditions," IEEE J. Photovolt., vol. 2, no. 3, pp. 247-255, July 2012, doi: https://doi.org/10.1109/JPHOTOV.2012.2195637.
F. Clement et al., "Processing and comprehensive characterisation of screen-printed mc-Si metal wrap through (MWT) solar cells," in Proceedings of the 22nd EU PVSEC, 2007, pp. 1399-1402.
G. Galbiati, V. Mihailetchi, A. Halm, R. Roescu, and R. Kopecek, "Results on n-type IBC solar cells using industrial optimized techniques in the fabrication processing," Energy Procedia, vol. 8, pp. 421-426, 2011, doi: https://doi.org/10.1016/j.egypro.2011.06.160.
M. Burger, “Pcbtouch Cell Contacting Solution From Meyer Burger Wins The Solar Industry Award 2015 In The Category Industry Development Award”, https://pes.eu.com/renewable-news/pcbtouch-cell-contacting-solution-from-meyer-burger-wins-the-solar-industry-award-2015-in-the-category-industry-development-award/ (date accessed:2023-07-14)
R. Kopecek et al., "Interdigitated Back Contact Technology as Final Evolution for Industrial Crystalline Single-Junction Silicon Solar Cell," Solar, vol. 3, no. 1: MDPI, pp. 1-14, 2022, doi: https://doi.org/10.3390/solar3010001
A. Khanna et al., "A fill factor loss analysis method for silicon wafer solar cells." IEEE J. Photovolt., vol. 3, no. 4, pp. 1170-1177, Sep. 2013, doi: https://doi.org/10.1109/JPHOTOV.2013.2270348.
J. Wong, "Griddler: Intelligent computer aided design of complex solar cell metallization patterns," in 2013 IEEE PVSC, Tampa, FL, USA, 2013, pp. 0933-0938, doi: https://doi.org/10.1109/PVSC.2013.6744296
M. Alt, S. Fischer, S. Schenk, S. Zimmermann, K. Ramspeck, and M. Meixner, "Electroluminescence imaging and automatic cell classification in mass production of silicon solar cells," in 2018 7th IEEE WCPEC, Waikoloa, HI, USA, 2018, pp. 3298-3304, doi: https://doi.org/10.1109/PVSC.2018.8547983
P. Sanchez-Friera, F. Ropero, B. Lalaguna, L. Caballero, and J. Alonso, "Power losses in crystalline silicon PV modules due to cell interconnection," in 23rd EU PVSEC, pp. 2701-2704, 2008, doi: https://doi.org/10.4229/23rdEUPVSEC2008-4CO.1.3
Downloads
Published
How to Cite
Conference Proceedings Volume
Section
License
Copyright (c) 2024 Ning Chen, Razvan Roescu, Forian Buchholz, Valentin D. Mihailetchi
This work is licensed under a Creative Commons Attribution 4.0 International License.
