20.8% PERC Solar Cell on 156 mm × 156 mm P-Type Multicrystalline Silicon Substrate

Abstract

Passivated emitter and rear solar cells (PERC) on the p-type multicrystalline silicon substrate have become the focus of recent laboratory and industrial-based research because of its promising mass production perspective. This paper presents the most recent studies on PERC solar cells and reveals the realization of a world record efficiency of 20.8% PERC solar cell fabricated with screen printing technology on 156 mm × 156 mm multicrystalline substrates. To further increase cell efficiency, an optical loss analysis was conducted, which shows that the current loss due to the nonoptimum light trapping dominates the overall optical loss. Based on the analysis, an efficiency of 21.3% is achievable in the near future with further optimization.