We demonstrated an effective poly(p-chloro-xylylene) (Parylene-C) encapsulation method for MAPbI solar cells. By structural and optical analysis, we confirmed that Parylene-C efficiently slowed the decomposition reaction in MAPbI. From a water permeability test with different encapsulating materials, we found that Parylene-C-coated MAPbI perovskite was successfully passivated from reaction with water, owing to the hydrophobic behavior of Parylene-C. As a result, the Parylene-C-coated MAPbI solar cells showed better device stability than uncoated cells, virtually maintaining the initial power conversion efficiency value (15.5 ± 0.3%) for 196 h.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6820723 | PMC |
| http://dx.doi.org/10.1038/s41598-019-51945-9 | DOI Listing |
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