DOI: https://doi.org/10.29363/nanoge.aohm.2019.026
Publication date: 8th January 2019
Current organic electronics research aims at exploiting the unique property matrix of “plastic” semiconductors, including their chemical tunability, straightforward processability and mechanical flexibility, to create new applications. While much knowledge has been developed in the synthesis of semiconducting conjugated organic materials, there is still an immense need for establishing broadly applicable design guidelines towards highly conductive macromolecular matter [1,2]. Moreover, the multitude of possibilities for “plastic” semiconductors and dopants to assemble over different length scales creates a daunting task to establish comprehensive and relevant correlations between structure, processing and properties. We will present here a multidisciplinary approach towards a framework to predict such structure/property interrelation in semiconducting “plastics”. We will focus on polythiophene derivatives as model systems, particularly poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT) [3], and discuss how the spatial arrangement, manipulated through intercalation and co-crystal formation with dopants, affects charge transport. We will conclude with providing a tentative picture of the complex correlation of structure and electronic landscape for the understanding of conducting “plastics” of metallic-type transport.
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