Title:	From Upscaling PERC to the Next Technology Cycle: Transparent Passivating Contacts May Merge n- and p-Type Cell Technology
Author(s):	P.P. Altermatt, G. Xu, X. Zhang, D. Chen, Y. Chen, Z. Feng
Keywords:	PERC, Silicon Wafer Solar Cells, Passivated Contact, TOPCon, Capex
Topic:	Silicon Materials and Cells
Subtopic:	Manufacturing & Production of Si Cells
Event:	38th European Photovoltaic Solar Energy Conference and Exhibition
Session:	2AO.8.1
Pages:	100 - 106
ISBN:	3-936338-78-7
Paper DOI:	10.4229/EUPVSEC20212021-2AO.8.1
Price:	0,00 EUR
Document(s):	paper, presentation

Abstract/Summary:

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Recent progress in the Chinese PV industry will be explained, particularly at Trinasolar. An outlook on cell design leading to the next technology cycle is given. As urgent R&D topics are suggested: how thermal history and injection density affect LeTID degradation of Ga-doped cells; material and processing sequence to produce transparent passivating contacts, both for PERC and TOPCon cells and HJT cells; it is important that the cells and transparent passivating contacts are free of scarce elements such as indium, otherwise the cell type cannot contribute significantly to meeting the Paris Climate Agreement due to planetary boundaries; possibly replacing silver with copper or aluminum is the most urgent task ahead of PV scale-up and much needed CO2 mitigation.