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Published on: November 15, 2016
Direct white light emission from carbon nanodots (C-dots) in solution processed light emitting diodes
Sofia Paulo-Mirasol1, Eugenia Martínez-Ferrero2, Emilio Palomares3
1Institute of Chemical Research of Catalonia-The Barcelona Institute of Science and Technology (ICIQ-BIST), Avda. Països Catalans, 16. Tarragona, E-43007, Spain. epalomares@iciq.es and Eurecat, Centre Tecnològic de Catalunya, Printed Electronics & Embedded Devices Unit, Avda. Ernest Lluch 36, Mataró 08302, Spain. Eugenia.martinez@eurecat.org and Departament d'Enginyeria Electrònica, Elèctrica i Automàtica, Universitat Rovira i Virgili, Avda. Països Catalans 26, 43007 Tarragona, Spain.
Abstract:
We describe the preparation of inverted white light emitting diodes by solution processing. The active layer is formed uniquely by Carbon Nanodots (C-dots) that display white-light emission at voltage close to 5 V when combined with metal oxides as charge transport layers. Moreover, we have demonstrated that the white light is not the product of charge transfer between the polymer selective contact and the C-dots but the result of the different recombination processes within the C-dots.
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