Synthesis and Characterization of Donor–π‐Acceptor‐Based Porphyrin Sensitizers: Potential Application of Dye‐Sensitized Solar Cells |
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Authors: | Mareedu Sreenivasu Akira Suzuki Dr. Mitsuhiro Adachi Challuri Vijay Kumar Dr. Bingi Srikanth S. Rajendar Dasa Rambabu Dr. Rangaraju Satish Kumar P. Mallesham Dr. N. Vijaya Bhaskar Rao Dr. M. Suresh Kumar Dr. P. Y. Reddy |
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Affiliation: | 1. Aisin Cosmos R&D Co. Ltd., HUDA Complex, Tarnaka, Hyderabad, 500007 (India);2. Aisin Cosmos R&D Co. Ltd., Kariya City, Aichi‐Ken, 4488650 (Japan);3. Government Degree College, Alair, A. P., 508101 (India) |
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Abstract: | New porphyrin sensitizers based on donor–π‐acceptor (D‐π‐A) approach have been designed, synthesized, characterized by various spectroscopic techniques and their photovoltaic properties explored. N,N′‐Diphenylamine acts as donor, the porphyrin is the π‐spacer, and either carboxylic acid or cyanoacryclic acid acts as acceptor. All compounds were characterized by using 1H NMR spectroscopy, ESI‐MS, UV–visible emission spectroscopies as well as electrochemical methods. The presence of aromatic groups between porphyrin π‐plane and acceptor group push the absorption of both Soret and Q‐bands of porphyrin towards the red region. The electrochemical properties suggests that LUMO of these sensitizers above the TiO2 conduction band. Finally, the device was fabricated using liquid redox electrolyte (I?/I3?) and its efficiency was compared with that of a leading sensitizer. |
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Keywords: | donor– acceptor systems electrochemistry porphyrins sensitizers zinc |
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