Abstract
Perovskite solar cells (PSCs) as the most promising alternative to the Si solar cells have been developed rapidly in recent time. Superior electron mobility and conductivity of the compact layer material are necessary for high efficiency in perovskite solar cells by reducing excessive charge accumulation and guaranteeing effective electron injection at the compact layer/perovskite interface. In this study, Ru ions were introduced into traditional compact TiO2 to improve the electron transporting layer (ETL) properties and conductivity performance. Ru4+ was discovered in the Ru:TiO2 according to the result of XPS. The reduced trap-filled limit voltage (VTFL) of the Ru:TiO2 compact layers showed that trap density in the Ru:TiO2 film was lower than that of the pristine TiO2 film. The PSCs based on 1 mol% Ru:TiO2 exhibited the suitable band gap, low resistivity and high carrier density, comparing with the undoped compact TiO2, the charge transportation at the compact layer/mesoporous layer interface was enhanced with the incorporation of Ru, resulting in the reduction in hysteresis of the device. The power conversion efficiency (PCE) of the Ru-doped compact TiO2 film based PSCs was improved from 14.83% to 18.35%.
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.
