Gas-solid reaction based over one-micrometer thick stable perovskite films for efficient solar cells and modules.

ABSTRACT: Besides high efficiency, the stability and reproducibility of perovskite solar cells (PSCs) are also key for their commercialization. Herein, we report a simple perovskite formation method to fabricate perovskite films with thickness over 1??m in ambient condition on the basis of the fast gas-solid reaction of chlorine-incorporated hydrogen lead triiodide and methylamine gas. The resultant thick and smooth chlorine-incorporated perovskite films exhibit full coverage, improved crystallinity, low surface roughness and low thickness variation. The resultant PSCs achieve an average power conversion efficiency of 19.1?±?0.4% with good reproducibility. Meanwhile, this method enables an active area efficiency of 15.3% for 5?cm?×?5?cm solar modules. The un-encapsulated PSCs exhibit an excellent T₈₀ lifetime exceeding 1600?h under continuous operation conditions in dry nitrogen environment.

SUBMITTER: Liu Z 

PROVIDER: S-EPMC6155243 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature