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http://hdl.handle.net/1843/60299| Type: | Artigo de Periódico |
| Title: | All-perylene-derivative for white light emitting diodes |
| Authors: | Everton Pereira de Andrade Ângelo Malachias de Souza Walace Doti do Pim Gustavo de Almeida Magalhães Sáfar Samuel Brum Martins Eduardo Policarpo Magalhães Campos Luciano Roni Silva Lara Humberto Osório Stumpf Gustavo de Medeiros Azevedo Mário Sérgio de Carvalho Mazzoni Luiz Alberto Cury Subodh Kumar Gautam Olivier Plantevin |
| Abstract: | An organic-based bright white light emitting compound, namely Tb(H3PTC)3 [H 4 PTC = perylene- 3,4,9,10-tetracarboxylic acid], able to be used as part of a white diode and as a part of a RGB system that can withstand high temperatures (B700 K), is developed using perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) and terbium(III ) nitrate pentahydrate as precursors by hydrothermal synthesis. Using PTCDA as the red emitter and the new derivative of it, Tb(H3PTC)3, as the blue-green emitter, along with a common deep blue LED can form a RGB system for display technologies, around room temperature. Temperature-dependent photoluminescence properties of the Tb(H3PTC)3 compound are also investigated for the involved excitonic-emission processes and the respective recombination lifetimes. The terbium(III ) complex was prepared using a procedure that is reproducible, easily modifiable, inexpensive, and environmentally friendly, opening new pathways for its large-scale applications. Unlike PTCDA, Tb(H3 PTC)3 has been shown to be soluble in N-methyl-2-pyrrolidone (NMP) as well as in dilute aqueous solutions of this organic solvent in a straightforward procedure. The light emission properties are intimately correlated with the molecular structure and electronic properties of Tb(H3 PTC)3 elucidated by experimental results of X-ray Absorption Near Edge Spectroscopy (XANES), Extended X-ray Absorption Fine Structure (EXAFS) and Density Functional Theory (DFT) calculations. A bright fluorescence yield is attained with a small amount of material either in solution or in solid form showing its potential to be used in state-of-the-art organic optoelectronic devices. |
| Subject: | Fotoluminescência Diodos emissores de luz |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA ICX - DEPARTAMENTO DE QUÍMICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1039/d0cp02718a |
| URI: | http://hdl.handle.net/1843/60299 |
| Issue Date: | 2020 |
| metadata.dc.url.externa: | https://pubs.rsc.org/en/content/articlelanding/2020/cp/d0cp02718a |
| metadata.dc.relation.ispartof: | Physical Chemistry Chemical Physics |
| Appears in Collections: | Artigo de Periódico |
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