1245902-30-0Relevant academic research and scientific papers
Design, synthesis and photophysical properties of A-D-A-D-A small molecules for photovoltaic application
Yan, Weibo,Zhang, Qian,Qin, Qingsong,Ye, Senyun,Lin, Yuanwei,Liu, Zhiwei,Bian, Zuqiang,Chen, Yongsheng,Huang, Chunhui
, p. 99 - 108 (2015)
A series of linear-conjugated small molecule compounds featured with the acceptor-donor-acceptor-donor-acceptor (A-D-A-D-A) structure were designed, synthesized and characterized. The films of the compounds showed a broad UV-Vis absorption range of 300-800 nm with high molar absorption coefficient of more than 1.0 × 104 cm-1. Their hole-mobility can be as high as 1.0 × 10-3 cm2 V-1 s-1. The compounds have a compatible HOMO energy level of -5.0 eV to PC71BM and a high solubility up to 20 mg mL-1 in chloroform. Therefore, compounds can blend with PC71BM in the chloroform and form an active layer for a photovoltaic cell device by spin-coating of the blend solution. A maximum power conversion efficiency of 3.2% was achieved with the DERH3TT solar cell device. These results indicate that the A-D-A-D-A small molecules with electron-withdrawing dyes as terminals are promising candidates for the high efficiency solution processed organic photovoltaic cells.
