Zinc Porphyrins Possessing Three p -Carboxyphenyl Groups: Effect of the Donor Strength of Push-Groups on the Efficiency of Dye Sensitized Solar Cells

Ram B. Ambre, Sandeep B. Mane and Chen-Hsiung Hung
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Ram B. Ambre: Institute of Chemistry, Academia Sinica, Nankang, Taipei 11528, Taiwan
Sandeep B. Mane: Institute of Chemistry, Academia Sinica, Nankang, Taipei 11528, Taiwan
Chen-Hsiung Hung: Institute of Chemistry, Academia Sinica, Nankang, Taipei 11528, Taiwan

Energies, 2016, vol. 9, issue 7, 1-12

Abstract: Zinc porphyrins decorated with three p -carboxyphenyl anchoring groups and various “push” substituents of varied electron-donating strengths were prepared in good yields by facile and straightforward ways. The effect of electron-donating strength of the donor molecules on the overall power conversion efficiency was evaluated with the help of photophysical, electrochemical, photovoltaic spectroscopy and quantum chemical calculations. It is observed from the photophysical and Infrared (IR) spectroscopic data that multi-anchoring dyes are more stable and bind more strongly to the TiO 2 surface than their one-anchor counterparts. The properties like a three-step synthesis, high overall yields, possible mass production on a gram-scale and strong binding affinities with TiO 2 surfaces make them a suitable choice for commercial applications. Zn 1 NH 3 A, with electron donating and anti-aggregation characteristics, achieved the highest efficiency of 6.50%.

Keywords: porphyrin sensitizer; dye sensitized solar cell (DSSC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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