边缘钝化研究进展

刘劲麟，胡述旭，王振华，王俊朝，宁艳华

深圳市大族光伏装备有限公司

E-mail: dugang103796@hanslaser.com

报告摘要

太阳电池降本提效的需求是一直持续的主要课题，除电池片转换效率的提高之外, 组件功率的提高也是重要的研发方向。电池片的电流对电阻损耗影响很大，电流会与电池中的切片数量成比例地减少，从而降低损耗[1]。但切片的电池片侧边会产生新的切割面, 导致边缘载流子的再结合，这在高效能电池架构中更为明显。

而边缘钝化因其容易和目前电池生产线兼容, 只需在电池片完成后增加切片及边缘钝化工艺便可达到减少半片或多片切片后的效率损失, 受到研究机构及业界很大的注意[2-7]。本报告将介绍大族光伏在边缘钝化的研究进展。

参考资料：

1. Hamed Hanifi, Charlotte Pfau1, David Dassler, Sebastian Schindler, Jens Schneider, Marko Turek & Joerg Bagdahn “Investigation of cell-to-module (CTM) ratios of PV modules by analysis of loss and gain mechanisms”, Photovoltaics International Volume 32.
2. Jonas D. Huyeng, Elmar Lohmüller, Behnaz Shabanzadeh, Christian Reichel, Torsten Rößler, Julian Weber, Marc Hofmann, Daniel von Kutzleben, Najwa Abdel Latif, Achim Kraft, Holger Neuhaus, Florian Clement and Ralf Preu “Challenges and advantages of cut solar cells for shingling and half-cell modules”, EPJ Photovoltaics 15, 22 (2024).
3. Franck Dhainaut, Raoul Dabadie, Benoit Martel, Thibaut Desrues, Mickaël Albaric, Olivier Palais, Sébastien Dubois, and Samuel Harrison “Edge passivation of shingled poly-Si/SiOx passivated contacts solar cells”, EPJ Photovoltaics 14, 22 (2023).
4. Ruy S. Bonilla, Bram Hoex, Phillip Hamer, and Peter R. Wilshaw “Dielectric surface passivation for silicon solar cells: A review”, Phys. Status Solidi A 214, No. 7, 1700293 (2017)
5. Elmar Lohmüller, Puzant Baliozian,Leon Gutmann, Leander Kniffki, Armin Richter, Lili Wang,Ricky Dunbar, Arnaud Lepert, Jonas D. Huyeng, Ralf Preu "TOPCon shingle solar cells: Thermal laser separation and passivated edge technology”, Prog Photovolt Res Appl. 2023;31:729–737.
6. Puzant Baliozian , Mohammad Al-Akash, Elmar Lohmüller , Armin Richter , Tobias Fellmeth, Anna Münzer , Nico Wöhrle, Pierre Saint-Cast , Hannah Stolzenburg, Alma Spribille, and Ralf Preu Postmetallization “Passivated Edge Technology”for Separated Silicon Solar Cells, IEEE JOURNAL OF PHOTOVOLTAICS, VOL. 10, NO. 2, MARCH 2020.
7. Benoit Martel, Mickaël Albaric, Samuel Harrison, Franck Dhainaut, Thibaut Desrues “Addressing separation and edge passivation challenges for high efficiency shingle heterojunction solar cells” Solar Energy Materials and Solar Cells Volume 250, 15 January 2023, 112095.