Hanwha Qcells (Perovskite) Hanwha Qcells is a division of Hanwha, a South Korean business group. The division operates within the solar sector, primarily within silicon solar panel manufacturing. However, in December 2022, Hanwha Qcells announced that it was working on the development of perovskite/silicon tandem solar cells. Hanwha Qcells (Perovskite)