Silicon heterojunction(SHJ) solar cells are crystalline silicon wafer-based photovoltaic devices fabricated with thinfilm deposition technology. The SHJ solar cells hold great potential for large-scale deployment for high conversion efficiencies with low-cost manufacturing. Recently Kaneka Corporation has fabricated an interdigitated-back-contact(IBC) SHJ solar cell with a certified 26.33% conversion efficiency in a large area(180.4 cm~2), which is a world record for any 1-sun crystalline silicon wafer-base...