In situ transfer of CH₃NH₃PbI₃ single crystals in mesoporous scaffolds for efficient perovskite solar cells.

ABSTRACT: Printable mesoscopic perovskite solar cells are usually fabricated by drop-casting perovskite precursor solution on a screen-printed mesoporous TiO₂/ZrO₂/carbon triple-layer followed by thermal annealing. They have attracted much attention due to their simple fabrication process and remarkable stability. However, challenges lie in how to achieve complete pore fillings of perovskites in the meso-pores and to obtain high-quality perovskite crystals. Here, we report an in situ crystal transfer (ICT) process based on gas-solid interaction to deposit perovskite CH₃NH₃PbI₃ absorber in the scaffold. CH₃NH₃PbI₃ single crystals are first transformed into a liquid phase via exposure to methylamine g

SUBMITTER: Guan Y 

PROVIDER: S-EPMC7067259 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature