title: Synthesis of novel acceptor molecules of mono- and multiadduct fullerene derivatives for improving photovoltaic performance.
abstract: We have successfully synthesized and separated a series of tert-butyl 4-C(61)-benzoate (t-BCB) organofullerenes, including monoadduct, diadduct, and triadduct compounds, and investigated their photophysics, electrochemistry, thermal properties, and high-performance liquid chromatography analysis. The photovoltaic devices were fabricated based on monoadduct, diadduct, and triadduct products, and the devices based on them exhibited power conversion efficiencies of 2.43%, 0.48%, and 1.68%, respectively. This was the first time to study the dependent relationship on the device performance and the different isomer numbers.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Chao
authors.initials: C
authors.lastname: Liu
authors.forename: Liang
authors.initials: L
authors.lastname: Xu
authors.forename: Dan
authors.initials: D
authors.lastname: Chi
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Li
authors.forename: Huibiao
authors.initials: H
authors.lastname: Liu
authors.forename: Jizheng
authors.initials: J
authors.lastname: Wang