Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)
Publication date: 5th February 2015
Ternary blend bulk heterojunction organic solar cells comprising either a donor and two acceptors or two donors and an acceptor semiconductors represent a promising route for improving OPVs power conversion efficiency (PCE). [1] However, maximizing the electrical output power density, resulting in high PCEs, requires careful balance among materials properties to achieve optimal panchromatic absorption, suitable energy-levels, balanced electron and hole mobilities, and good light harvesting efficiency.
In this regard, and in continuation of our efforts to understand the interrelationships between semiconductors’ architecture and organic photovoltaic devices' performance, [2] here we report on the spectral properties and photophysics of different “two donor”/one acceptor” systems in thin-films. Particularly, results for ternary blends consisting of P3HT or a low-band gap phthalimide based copolymer / PCBM and arylacetylenic small-molecular systems will be discussed. The issue of the influence of a ternary donor material on the morphology of a polymer/PCBM blend will be also tackled.
[1] (a) Ameri,T.; Khoram,P.; Min,J.; Brabec, C. Adv. En. Mater. 2013, 25, 4245-4266; (b) Chen, Y.-C.; Hsu, C.-Y.; Lin, R. Y.-Y.; Ho, K.-C.; Lin J. T. ChemSusChem 2013,6, 20-35 [2]Inter alia:(a) Seri,M. ; Marrocchi, A.; Bagnis,D.; Ponce, R.; Taticchi, A.; Marks, T.J.; Facchetti, A. Adv. Mater. 2011, 23, 3827-3831 (b) Flamini, R.; Marrocchi,A.; Spalletti,A. Photochem. Photobiol. Sci. 2014, 13, 1031-1038
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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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