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TOPCon solar cells – Technology roadmap for 25.5%-efficiency industrial manufacturing

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By Xinxing Xu, Zhaowei Wang, Hongbo Tong & Hua Li, Longi Green Energy Technology Co., Ltd., Xi’an, Shaanxi, China

This paper presents an analysis and the results of extensive simulations of the efficiency limits and roadmap to 25.5% of a tunnel oxide passivated contact (TOPCon) solar cell, on the basis of an efficiency level of 25.21% (designed area, identified by ISFH) achieved through three years of continuous technical optimization on a pilot line at Longi.

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TOPCon’s technology roadmap
LONGi discusses the route to TOPCon cell efficiency of 25.5%

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