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The PERC+ cell: More output power for less aluminium paste

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By Thorsten Dullweber, Christopher Kranz, Robby Peibst, Ulrike Baumann & Helge Hannebauer, ISFH; Alexander Fülle, Stefan Steckemetz, Torsten Weber, Martin Kutzer, Matthias Müller, Gerd Fischer, Phedon Palinginis & Holger Neuhaus, SolarWorld Innovations

Passivated emitter and rear cell (PERC) technology has been forecast to become mainstream in the next few years, gaining around a 30% market share. This paper presents a novel PERC solar cell design in which a screen-printed rear aluminium (Al) finger grid is used instead of the conventional full-area Al rear layer, while implementing the same PERC manufacturing sequence. This novel cell concept, called ‘PERC+’, offers several advantages over PERC, explored in the paper.

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With PV supply and demand finding equilibrium once again, manufacturers are turning their attention to the next big question they must face: what their technology of choice will be for the next round of production expansions they are planning, announcements of which are now coming thick and fast. In this issue of Photovoltaics International we feature an exclusive preview of research undertaken by Finlay Colville, head of our new Solar Intelligence activities. Colville will be publishing a full report on next-generation cell technologies in the new year, ahead of the PVCellTech event we will be hosting in Kuala Lumpur, Malaysia in March 2016. Together the report and event promise to bring some much-needed focus to the debate around cell technology evolution, which is happening against the backdrop of break-neck growth in the solar industry worldwide.

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