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https://hdl.handle.net/20.500.14279/9310
Τίτλος: | Enhancement of the Power Conversion Efficiency in Organic Photovoltaics by Unveiling the Appropriate Polymer Backbone Enlargement Approach | Συγγραφείς: | Chochos, Christos L. Singh, Ranbir R. Kim, Min Gasparini, Nicola Katsouras, Athanasios Kulshreshtha, Chandramouli Gregoriou, Vasilis G. Keivanidis, Panagiotis E. Ameri, Tayebeh Brabec, Christoph J. Cho, Kilwon Avgeropoulos, Apostolos |
Major Field of Science: | Engineering and Technology | Field Category: | Mechanical Engineering | Λέξεις-κλειδιά: | Morphology;Organic electronics;Polymer semiconductors;Supramolecular assembly;Recombination dynamics | Ημερομηνία Έκδοσης: | 15-Μαρ-2016 | Πηγή: | Advanced Functional Materials, 2016, vol. 26, no. 11, pp. 1840-1848 | Volume: | 26 | Issue: | 11 | Start page: | 1840 | End page: | 1848 | Περιοδικό: | Advanced Functional Materials | Περίληψη: | Optoelectronic properties, supramolecular assemblies, and morphology variation of polymeric semiconductors are governed by six fundamental chemical features. These features are molecular weight, bond length alternation (BLA), planarity, aromatic resonance energy, substituents, and intermolecular interactions. Of these features the specific role of BLA in determining the performance of a polymeric semiconductor in practical technological applications is so far unknown. This study investigates this question and reports the novel finding that the optoelectronic, microscopic (supramolecular packing), and macroscopic (morphology variation and device performance) properties of model semiconducting polymers depend on the conjugated polymer backbone enlargement, which is directly related to the BLA. Extensive studies are performed in both single-component polymer films and their blends with fullerene derivatives. Understanding the specific structure-properties relations will lead to significant advancement in the area of organic electronics, since it will set new design rules toward further optimization of polymer chemical structures to enhance the device performances. An efficient way to enlarge the polymer backbone of an electron donor conjugated polymer toward higher organic photovoltaic performance is presented. | URI: | https://hdl.handle.net/20.500.14279/9310 | ISSN: | 1616301X | DOI: | 10.1002/adfm.201504953 | Rights: | © WILEY | Type: | Article | Affiliation: | University of Ioannina Pohang University of Science and Technology Friedrich-Alexander University Erlangen-Nuremberg National Hellenic Research Foundation Cyprus University of Technology |
Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
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