Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Abstract
Dye-sensitized solar cells (DSCs) play a crucial role among the 3rd generation futuristic solar photovoltaic technologies. In comparison to the polymeric solar light harvesting devices, researchers have shown more interest in organic small molecule based solar cells, due to the flexibility of synthesis, functionalization as well as ease of processiblity which play a key role in tuning the optical and electronic properties thereby improving the device performance.[1] Panchromatic dyes with enhanced light harvesting ability, capable of capturing the entire solar spectrum are gaining more importance in photovoltaic research these days, and squaraine dyes are an ideal choice in this respect.[2,3] Although high molar extinction coefficient and low band gap of squaraine dyes facilitate better light harvesting capabilities they are limited by narrow absorption.[4] In this context, we designed a novel anthracene based bis-squaraine dye having panchromatic absorbance through intramolecular excitonic interaction. We report the synthesis, optical and electrochemical properties, and photovoltaic performance of these promising sensitizers which will prove to have a broader implication in the design of future organic DSC sensitizers.
References
[1] T. Maeda, S. Mineta, H. Fujiwara, H. Nakao, S. Yagi, H. Nakazumi,J. Mater. Chem. A, 2013, 1,1303
[2] P. Borah, S. Sreejith, P. Anees, N. V. Menon, Y. Kang, A. Ajayaghosh, Y. Zhao, Sci. Adv. 2015
[3] G. Chen, H. Sasabe, T. Igarashi, Z. Hong, J. Kido, J. Mater. Chem. A, 2015, 3, 14517
[4] S. Soman, M. A. Rahim, S. Lingamoorthy, C. H. Suresh, S. Das, Phys. Chem. Chem. Phys., 2015,17, 23095
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