- Effect of Thiophene Spacer Position in Carbazole-Based Dye-Sensitized Solar Cells on Photophysical, Electrochemical and Photovoltaic Properties
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The synthesis, photophysical and electrochemical properties, and photovoltaic performances in dye-sensitized solar cells (DSSCs) of five new metal-free organic sensitizers with a carbazole moiety as the electron donor are reported. The compounds contain a thiophene at various positions and a cyanoacrylic acid unit as the electron acceptor. The position of the thiophene moiety affected both the photophysical and electrochemical properties, leading to conversion efficiencies of 1.44 to 4.57 % under AM 1.5 solar conditions (100 mW cm–2). The best performance and longest electron lifetime were found when a thiophene was located on both donor and acceptor sites. The DSSC showed a short-circuit current (Jsc) of 8.59 mA/cm2, an open-circuit photovoltage (Voc) of 0.75 V, and a fill factor (FF) of 0.71. The position of the π-conjugated bridges not only affects the absorption spectra and the energy levels of the sensitizers, but also adjusts the electron lifetime.
- Samae, Ruslan,Surawatanawong, Panida,Eiamprasert, Utt,Pramjit, Songyos,Saengdee, Laksana,Tangboriboonrat, Pramuan,Kiatisevi, Supavadee
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p. 3536 - 3549
(2016/07/28)
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- New insights into the SAR and binding modes of bis(hydroxyphenyl)thiophenes and -benzenes: Influence of additional substituents on 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) inhibitory activity and selectivity
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17β-Hydroxysteroid dehydrogenase type 1 (17β-HSD1) is responsible for the catalytic reduction of weakly active E1 to highly potent E2. E2 stimulates the proliferation of hormone-dependent diseases via activation of the estrogen receptor α (ERα). Because o
- Bey, Emmanuel,Marchais-Oberwinkler, Sandrine,Negri, Matthias,Kruchten, Patricia,Oster, Alexander,Klein, Tobias,Spadaro, Alessandro,Werth, Ruth,Frotscher, Martin,Birk, Barbara,Hartmann, Rolf W.
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experimental part
p. 6724 - 6743
(2010/04/05)
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