Abstract
The interfacial engineering is a significant strategy for promoting the photovoltaic performance of perovskite solar cell (PSC). In this paper, we demonstrate a simple but effective method to reduce the defects by intercalating the cystamine dihydrochloride (CMDR) at the interface between the electron transport layers (ETLs) and perovskite layer (PVK). The CMDR possesses double amino groups, which can produce Ti-N bonds to combine with TiO2 for decreasing the interface defects, and react with I− ions for suppressing the excess PbI2. XRD and SEM confirm that CMDR significantly improve the crystallinity of PVK. The photoelectrical characterization presents that CMDR modified PSCs exhibit higher conductivity, lesser surface defects, better energy level matching, and superior electron's extraction and transmission than those of pristine devices. Ultimately, the power conversion efficiency of champion PSC is increased from 18.41% to 20.63% with excellent reproducibility.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
