1275614-97-5Relevant articles and documents
Donor-acceptor dyes with fluorine substituted phenylene spacer for dye-sensitized solar cells
Chen, Bo-So,Chen, Dong-Yi,Chen, Chao-Ling,Hsu, Che-Wei,Hsu, Hui-Chu,Wu, Kuan-Lin,Liu, Shih-Hung,Chou, Pi-Tai,Chi, Yun
, p. 1937 - 1945 (2011/10/08)
A new series of organic sensitizers LJB-H, LJB-Fo and LJB-F m with triphenylamine, 3,4-ethylenedioxythiophene plus various functionalized phenylenes, and cyanoacrylic acid as the donor, π-spacer, and anchoring group, respectively. These organic sensitizers exhibit much higher molar extinction coefficients than the parent LJ1 dye as well as reveal a remarkable fluorine substituent effect. LJB-Fm with fluoro substitution at the meta position relative to cyanoacrylic acid possesses a lower S0-S1 gap and weaker coupling with the TiO 2 electrode (cf.LJB-H and LJB-Fo). Conversely, due to the resonance effect with respect to cyanoacrylic acid, the ortho-F-substituted LJB-Fo has a larger energy gap but stronger TiO2 affinity. As a result, LJB-Fo shows better DSSC performance with J sc = 15.58 mA cm-2, Voc = 787 mV, FF = 0.67 and η = 8.22%.
