Abstract
In this work, four new truxene-based hole-transporting materials (HTMs) have been synthesized and applicated in the inverted perovskite solar cells (PSCs). The impact that the length of alkyl and periphery arylamine on the photophysical, electrochemical and hole transporting properties has been systematically investigated. These new HTMs exhibit decent hole mobility of 10−3 cm2 V−1 s−1, which ensure efficient hole extraction in dopant-free devices. PSC using the dopant-free M118 achieves a power conversion efficiency of 17.1%, which is much higher than the value of 14.4% achieved using poly (3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS). Importantly, PSCs based on these truxene HTMs exhibit significantly enhanced durability under UV light. This work reveals that the adjustment of length of alkyl as well as periphery arylamine is necessary for development of stable and efficient truxene HTMs.
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.
