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Title A novel series of organic semiconductors for OPV and OFET applications / by Diego Cortizo Lacalle.
Name Lacalle, Diego Cortizo. .
Abstract In the last three decades, the search for alternative energy for common fuel sources has been greatly developed. Among the already well-established and developing technologies (wind energy, hydrogen, geothermal energy or hydropower), solar cells have attracted enormous interest. This interest is due to the potentially vast solar energy that can be harvested on the Earth's surface. Currently, solar cells based on inorganic materials are widespread due to their high efficiency, whereas the power conversion efficiency of organic photovoltaics (OPVs), being new technology, is continuously increasing towards that of their inorganic counterparts. The improvement of this promising field is strongly linked to the development of new materials to increase the harvesting properties of the organic solar cell, as well as a better understanding of the physics and the behaviour of every component within the device. In that sense, this thesis presents the synthesis and characterisation of three novel series of organic materials and their performance in organic photovoltaics. Chapter 2 describes the incorporation of a well-known dye (BODIPY) into conjugated polymers. A BODIPY core was co-polymerised with bis-EDOT and bis-EDTT units and their performance in OPVs was studied. Chapter 3 shows the effective fusion of TTF units via a thiophene unit to the main conjugated polymer chain. A fused thieno-TTF moiety was copolymerised with a soluble derivative of DPP and tested in organic photovoltaics and OFETs showing excellent results. Finally, the synthesis and characterisation of two new "small molecules" based on BODIPY-DPP-BODIPY triads are described in Chapter 4. The performance of these two novel compounds in OPVs is currently under study.
Publication date 2012
Name University of Strathclyde. Dept. of Pure and Applied Chemistry.
Thesis note Thesis PhD University of Strathclyde 2012 T13191
System Number 000002030

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