Quick characterization method of current-matching-status for large area (1.1∗1.3m) high efficiency a-Si/uc-Si tandem solar module

In this work, we have proposed a universal and easy characterization methodology to quickly clarify Current Matching status of large area (1.3*1.1 m) a-Si/ uc-Si tandem-junction photovoltaic modules, which accounts on the analysis of the evolution trends of Isc, Rsh, and FF values. While moving matching status from bottom-limit status across the matching point toward top-limit status, Isc will increase and finally saturate and FF will reach the local minimal value around the current-matching point. Furthermore, the increase of Rsh is, the first time, proposed as an indicative parameter for judging current matching status. Different experiments are provided to testify this methodology and theoretical explanation is given. With Auria´s patented Moon Technology, the extremely high Rsh value (>;10⁴Ω) is obtained, which further improves the applicability of this methodology as an effective monitoring tool in mass production.