Enhanced crystallinity of CH₃NH₃PbI₃ by the pre-coordination of PbI₂-DMSO powders for highly reproducible and efficient planar heterojunction perovskite solar cells.

ABSTRACT: Solution processable CH₃NH₃PbI₃ has received considerable attention for highly-efficient perovskite solar cells. However, the different solubility of PbI₂ and CH₃NH₃I is problematic, initiating active solvent engineering research using dimethyl sulfoxide (DMSO). Here we investigated the pre-coordination of PbI₂-DMSO powders for planar heterojunction perovskite solar cells fabricated by a low-temperature process (≤100 °C). Pre-coordination was carried out by simple mechanical mixing using a mortar and pestle. The composition of PbI₂-DMSO _x (x = 0, 1, or 2) in the powder mixture was investigated by gradually increasing mechanical mixing time, and a dominant composition of PbI

SUBMITTER: Lee J 

PROVIDER: S-EPMC9077036 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature