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Title: Synthesis and characterization of fused conjugated materials for organic electronics
Keywords: Fused ring systems, Heteroacenes, Dithienopyrrole, Indolocarbazole, Thienoimidazole, Low bandgap polymers
Issue Date: 8-Jan-2010
Citation: GANAPATHY BALAJI (2010-01-08). Synthesis and characterization of fused conjugated materials for organic electronics. ScholarBank@NUS Repository.
Abstract: Exploration of electronic and optical properties of new conjugated materials has opened many avenues in the design and fabrication of optoelectronic devices. Among the various known conjugated materials, fused aromatic systems (acenes) received considerable interest due to their rigid planar structure and enhanced p-conjugation. However, carbon based acenes has poor photochemical stability and solubility. On the other hand fused heterocyclic systems are highly stable with the heteroatom providing the additional scope to tune the properties. Tuning the molecular structure for improved properties and processibility has been achieved by many research groups around the world. Therefore, our intention is to generate the organic semiconducting materials based on the fused heterocyclic systems for the application in organic field effect transistor (OFETs), organic light emitting diode (OLEDs) and organic photovoltaic (OPVs) devices. In order to achieve this fused thiophene and/or pyrrole based dibenzothienopyrrole, indolo/diindolo-dithienopyrrole, thiadiazole fused indolo[2,3-a]carbazole and thieno[3,4-d]imidazole are synthesized and characterized in detail. The scope of the thesis involves the detailed investigation of various aspects of these heterocyclic systems such as crystal packing, optoelectronic properties, time-of-flight mobility, and surface morphology.
Appears in Collections:Ph.D Theses (Open)

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