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Fabrication and characterization of light-emitting devices produced with composites

Grant number: 15/25069-9
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): March 01, 2016
Effective date (End): December 31, 2017
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Giovani Fornereto Gozzi
Grantee:Flávio Henrique Feres
Host Institution: Instituto de Geociências e Ciências Exatas (IGCE). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil


Up to the 1970 decade the polymeric materials were explored only as insulating materials. Since the discovery of the high conductivity in polyacetilene doped with iodine, the polymeric materials become considered to fabricate electronic and opto-electronic devices. The main advantage of the polymeric material in comparison with the inorganic semiconductors it is the solubility, which enables simplest and low cost fabrication of devices by printing and coating techniques. In the field of light-emitting devices, at the ends of the 1980 decade, was reported the fabrication of the first light-emitting diode comprising a polymeric semiconductor. In 2007 was reported the fabrication of the first light-emitting device based on a light-emitting organic/inorganic composite, comprising inorganic micrometric light-emitting powder and a doped semiconductor polymer. In the field of solution processed light-emitting devices, only the devices fabricated with composites are in commercial stage, with main application in lighting and visual communication systems. Although the materials to fabricate this class of devices, and the devices, has already been traded, the materials physical properties and devices operational mechanisms were weakly studied. In this context, the present project has as main objective the study of operational mechanisms of this class of devices, with focus on the active material electroluminescence processes, which it is unexplored in the scientific literature.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
COLUCCI, RENAN; QUADROS, MATHEUS HENRIQUE; FERES, FLAVIO HENRIQUE; MAIA, FRANCISCO BARBOSA; DE VICENTE, FABIO SIMOES; FARIA, GREGORIO COUTO; SANTOS, LUCAS FUGIKAWA; GOZZI, GIOVANI. Cross-linked PEDOT: PSS as an alternative for low-cost solution-processed electronic devices. Synthetic Metals, v. 241, p. 47-53, . (08/57706-4, 15/25069-9)

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