Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
In DSCs, sensitizers play a vital role which lead to extensive research in developing new dye molecules to harvest the entire visible and NIR region of sunlight. In spite of all the advantages, the relatively higher cost and scarcity of Ru metal along with the exhibited absorption limited to the visible range necessitates the need for sensitizers that can absorb in the NIR region.1,2
Metal free organic dyes proved to be alternative sources for the metal bound sensitizers owing to their higher molar absorption coefficients, tunable photophysical and electrochemical properties, ease of structural modifications and cost effectiveness.3 Among the metal free dyes squaraines are well known for intense absorption in the NIR region and flexibility for synthetic modifications.4,5 Even though these dyes are endowed with better absorption there are other parameters that need to be optimized in a way to circumvent the present limitations in performance. My presentation will involve some of the engineering strategies that we used in a way to tune the energetics that led to performance enhancement.
References
1. L. Han,A. Islam, H. Chen, C.Malapaka, B.Chiranjeevi, S. Zhang, X. Yang and M. Yanagida, Energy Environ. Sci., 2012, 5, 6057.
2. Y. Numata, S. P. Singh, A. Islam, M. Iwamura, A. Imai, K. Nozaki and L. Han, Adv. Funct. Mater., 2013, 23, 1817.
3. A. Hagfeldt, G. Boschloo, L. C. Sun, L. Kloo and H. Pettersson, Chem. Rev., 2010, 110, 6595.
4. S. Alex, U. Santhosh and S. Das, J. Photochem. Photobiol., A, 2005, 172, 63.
5. S. Soman, M. A. Rahim, S. Lingamoorthy, C. H. Suresh and S. Das, PhysChemChemPhys., 2015, 17, 23095.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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