[15p-211-1~18] 16.3 Bulk, thin-film and other silicon-based solar cells

[15p-211-11] Development of passivation films for n-type crystalline Si solar cells (2)

〇Kunihiko Nishimura¹, Tatsuro Watahiki¹, Yasutoshi Yashiki¹, Takayuki Morioka¹, Yumiko Kobayashi¹, Tokioka Hidetada¹, Yamamuka Mikio¹ (1.Mitsubishi Electric)

Keywords:solar cells, silicon, PERT

Novel passivation films for rear sides of n-type solar cells were developed. Typical PERT (passivated emitter, rear totally diffused) cells have the trade-off between rear side passivation quality and rear contact resistance. However, with novel passivation films, both good passivation quality and low contact resistance for fire-through electrodes were obtained. Using these films, Voc and FF were improved and a gain of conversion efficiency was 0.4pt compared with the conventional PERT cell.