By 2020, Solar PV – with bifacial Passivated Emitter and Rear Cell (PERC) technologies – had been crowned the new king of energy markets, [1] reaching extremely low offers in tenders in the Middle East and North African (MENA) states such as Saudi Arabia, drawing prices as low as US$0.01c/kWh [2] in 2021. As PERC is now coming to its efficiency limits, the question is what next? Who will be “the emperor”? Will there be a fast switch from PERC to n-type technology, as was the case about five years ago for Al-BSF to PERC? PV Tech Research, as depicted in Fig. 1 [3], as almost now the whole PV community, believe so.  



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