Enhanced device performance and stability of perovskite solar cells with low-temperature ZnO/TiO₂ bilayered electron transport layers.

ABSTRACT: The instability of perovskite films is a major issue for perovskite solar cells based on ZnO electron transport layers (ETLs). Here, ZnO nanoparticle (NP)- and ZnO sol-gel layers capped with low-temperature processed TiO₂, namely ZnO/TiO₂ bilayered films, have been successfully employed as ETLs in highly efficient MAPbI₃-based perovskite solar cells. It is demonstrated that these ZnO/TiO₂ bilayered ETLs are not only capable of enhancing photovoltaic performance, but also capable of improving device stability. The best device based on the ZnO/TiO₂ bilayered ETL exhibits an efficiency of ∼15% under standard test conditions and can retain nearly 100% of its initial efficiency after 30 days of atmosphere storage, showing much higher device

SUBMITTER: Zhang C 

PROVIDER: S-EPMC9081582 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature