Ecological Biosubstrates Obtained from Onion Pulp (Allium cepa L.) for Flexible Organic Light-Emitting Diodes

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dc.contributor.authorFaraco, Thales A.
dc.contributor.authorDe O. X. Silva, Hálice
dc.contributor.authorDa S. Barud, Hernane
dc.contributor.authorMaciel, Indhira O.
dc.contributor.authorDa Silva, Robson R.
dc.contributor.authorQuirino, Welber G.
dc.contributor.authorFragneaud, Benjamin
dc.contributor.authorRibeiro, Clóvis A. [UNESP]
dc.contributor.authorDos S. Dias, Diógenes
dc.contributor.authorG. Pandoli, Omar
dc.contributor.authorCremona, Marco
dc.contributor.authorLegnani, Cristiano
dc.contributor.institutionUniversidade Federal de Juiz de Fora (UFJF)
dc.contributor.institutionUniversidade de Araraquara (UNIARA)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionBioSmart Nanotechnology
dc.contributor.institutionPontifícia Universidade Católica Do Rio de Janeiro (PUC-Rio)
dc.date.accessioned2020-12-12T02:23:37Z
dc.date.available2020-12-12T02:23:37Z
dc.date.issued2019-01-01
dc.description.abstractA new biopolymer obtained from onion pulp (Allium cepa L.) was employed to produce a sustainable substrate for flexible organic light-emitting diodes (FOLEDs). Indium tin oxide (ITO) and SiO2 thin films were deposited by rf-magnetron sputtering onto these biosubstrates to obtain flexible, transparent, and conductive anodes, on top of which FOLEDs were produced. This new biomaterial exhibits an optical transparency of 63% at 550 nm. ITO films were optimized by varying rf power during deposition onto the biopolymers, and their electrical properties are comparable to the those of ITO grown on top of rigid substrates: a carrier concentration of -3.63 × 1021 cm-3 and carrier mobility of 7.72 cm2 V-1 s-1 for the optimized film. Consequently, the sheet resistance and resistivity of this ITO film were 8.92 ω sq-1 and 2.23 × 10-4 ω cm, respectively, hence allowing the production of FOLEDs. The A. cepa L. based FOLED was fabricated using CuPc, β-NPB, and Alq3 as organic layers, and it exhibited a maximum luminance of about 2062 cd m-2 at 16.6 V. The current efficiency reached a maximum value of 2.1 cd A-1 at 85.3 mA cm-2. The obtained results suggest the possibility to use these substrates for innovative biocompatible applications in optoelectronics, such as photodynamic therapy.en
dc.description.affiliationGrupo de Nanociência e Nanotecnologia (NANO) Departamento de Física Universidade Federal de Juiz de Fora (UFJF)
dc.description.affiliationLaboratório de Biopolímeros e Biomateriais (BIOPOLMAT) Departamento de Química Universidade de Araraquara (UNIARA)
dc.description.affiliationInstituto de Física de São Carlos Universidade de São Paulo (USP)
dc.description.affiliationInstituto de Química Universidade Estatual Paulista Júlio de Mesquita Filho (UNESP)
dc.description.affiliationBioSmart Nanotechnology
dc.description.affiliationLaboratório de Optoeletrônica Molecular (LOEM) Departamento de Física Pontifícia Universidade Católica Do Rio de Janeiro (PUC-Rio)
dc.description.affiliationDepartamento de Química Pontifícia Universidade Católica Do Rio de Janeiro (PUC-Rio)
dc.description.affiliationUnespInstituto de Química Universidade Estatual Paulista Júlio de Mesquita Filho (UNESP)
dc.identifierhttp://dx.doi.org/10.1021/acsami.9b14029
dc.identifier.citationACS Applied Materials and Interfaces.
dc.identifier.doi10.1021/acsami.9b14029
dc.identifier.issn1944-8252
dc.identifier.issn1944-8244
dc.identifier.lattes8498310891810082
dc.identifier.orcid0000-0002-7984-5908
dc.identifier.scopus2-s2.0-85074760895
dc.identifier.urihttp://hdl.handle.net/11449/201081
dc.language.isoeng
dc.relation.ispartofACS Applied Materials and Interfaces
dc.sourceScopus
dc.subjectAllium cepa L.
dc.subjectbiopolymer
dc.subjectbiosubstrate
dc.subjectflexible organic light-emitting diode
dc.subjectFOLED
dc.titleEcological Biosubstrates Obtained from Onion Pulp (Allium cepa L.) for Flexible Organic Light-Emitting Diodesen
dc.typeArtigo
unesp.author.lattes8498310891810082[8]
unesp.author.orcid0000-0003-2957-6006[1]
unesp.author.orcid0000-0002-0633-9457[2]
unesp.author.orcid0000-0001-9081-2413[3]
unesp.author.orcid0000-0002-1757-4102[4]
unesp.author.orcid0000-0001-6887-4749[5]
unesp.author.orcid0000-0001-6294-5382[6]
unesp.author.orcid0000-0001-8170-6117[7]
unesp.author.orcid0000-0002-7984-5908[8]
unesp.author.orcid0000-0002-7497-7282[9]
unesp.author.orcid0000-0002-2220-7817[10]
unesp.author.orcid0000-0003-1306-4639[11]
unesp.author.orcid0000-0002-5234-5487[12]

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