A zwitterionic polymer as an interfacial layer for efficient and stable perovskite solar cells.

ABSTRACT: Perovskite solar cells have been rapidly developed in the past ten years. It was demonstrated that the interfacial layer plays an important role in device performance of perovskite solar cells. In this study, we report utilization of a photoinitiation-crosslinked zwitterionic polymer, namely dextran with carboxybetaine modified by methacrylate (Dex-CB-MA), as an interfacial layer to improve the film morphology of the CH₃NH₃PbI₃ photoactive layer and the interfacial contact between the poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) hole extraction layer and CH₃NH₃PbI₃ photoactive layer. It is found that the Dex-CB-MA thin layer forms a better band alignment between the PEDOT:PSS hole extraction layer and

SUBMITTER: Zhou S 

PROVIDER: S-EPMC9072107 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature