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.
