CPCN-Regulated SnO₂ Composites Enables Perovskite Solar Cell with Efficiency Beyond 23.

ABSTRACT: Efficient electron transport layers (ETLs) not only play a crucial role in promoting carrier separation and electron extraction in perovskite solar cells (PSCs) but also significantly affect the process of nucleation and growth of the perovskite layer. Herein, crystalline polymeric carbon nitrides (cPCN) are introduced to regulate the electronic properties of SnO₂ nanocrystals, resulting in cPCN-composited SnO₂ (SnO₂-cPCN) ETLs with enhanced charge transport and perovskite layers with decreased grain boundaries. Firstly, SnO₂-cPCN ETLs show three times higher electron mobility than pristine SnO₂ while offering better energy level alignment with the perovskite layer. The SnO₂-cPCN ETLs with decreased wettability endow the per

SUBMITTER: Li Z 

PROVIDER: S-EPMC8017043 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature