Abstract
A novel C70 fullerene derivative ICBM was rationally designed and synthesized by [4+2] cyclic addition reaction between an indene derivative (methyl 4-(1H-inden-3-yl)butanoate) and C70. The absorption and photoluminescence of the mixed films of ICBM with different polymer donor materials were characterized. The electrochemical reduction behavior of ICBM in the range of 0 to −2.5V was investigated by the cyclic voltammetry method, and the result shows that the lowest unoccupied molecular orbital (LUMO) level of ICBM is 0.07eV higher than that of PC70BM. The photovoltaic devices based on poly (3-hexylthiophene) (P3HT) and a low band gap polymer (PTB7) as donors, with ICBM as an acceptor gave power conversion efficiencies of 5.00% and 6.67%, respectively. The result demonstrates that this novel C70 fullerene derivative is a much better acceptor for wide-band gap as well as low-band gap donor polymers in the BHJ polymer photovoltaics.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.