Iontronics with cork

Detalhes bibliográficos
Autor(a) principal: Além, António Pedro Domingues
Data de Publicação: 2019
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/79927
Resumo: This work reports an unprecedented functionalization of one of the most unique natural materials on Earth, cork, in the field of electronics. Motivated by the excessive waste of the cork industry and resorting to other natural and abundant materials in nature, it was possible to successfully develop electrolytes based on cork. In a primary approach, there are several steps considered and constantly reevaluated in order to produce the first functional cork-based electrolyte. An aqueous lithium salts and urea solvent system is essential, as well as a natural binding agent, herein a cellulose derivative, and an acid neutralization. Secondly, these novel cork-based electrolytes are put to the test as the gate dielectric on EGTs with a cellulose based semiconducting ink, and their electrical performance is studied. The cork-based electrolytes show interesting properties for applications such as supercapacitors, electronic wearables or electrochromic displays due to their electrical double-layer capacitance (CDL) values of more than 8 μF cm−2 and ionic conductivity in the order of 10−4 S cm−1. Carboxymethyl cellulose and zinc oxide EGTs on cork composite substrates with the functional cork material as the gate dielectric exhibit low working voltage (<2 V), Ion/Ioff ratios of 103, a subthreshold swing (SS) lower than 0.3 Vdec−1, low saturation mobilities (SAT) at 0.4 cm2V−1s−1 and transconductance (gm) of 10−6 S. The flexible corkbased electrolyte-gated transistors on paper are also demonstrated, operating at low voltage (Von <1V) and exhibiting transconductance (gm) values of 10−4 S and saturation mobilities (SAT) higher than 10 cm2V−1s−1.
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spelling Iontronics with corkCorkcork electronicscellulosepaper electronicselectrolyteselectrolytegated transistorsDomínio/Área Científica::Engenharia e Tecnologia::Engenharia dos MateriaisThis work reports an unprecedented functionalization of one of the most unique natural materials on Earth, cork, in the field of electronics. Motivated by the excessive waste of the cork industry and resorting to other natural and abundant materials in nature, it was possible to successfully develop electrolytes based on cork. In a primary approach, there are several steps considered and constantly reevaluated in order to produce the first functional cork-based electrolyte. An aqueous lithium salts and urea solvent system is essential, as well as a natural binding agent, herein a cellulose derivative, and an acid neutralization. Secondly, these novel cork-based electrolytes are put to the test as the gate dielectric on EGTs with a cellulose based semiconducting ink, and their electrical performance is studied. The cork-based electrolytes show interesting properties for applications such as supercapacitors, electronic wearables or electrochromic displays due to their electrical double-layer capacitance (CDL) values of more than 8 μF cm−2 and ionic conductivity in the order of 10−4 S cm−1. Carboxymethyl cellulose and zinc oxide EGTs on cork composite substrates with the functional cork material as the gate dielectric exhibit low working voltage (<2 V), Ion/Ioff ratios of 103, a subthreshold swing (SS) lower than 0.3 Vdec−1, low saturation mobilities (SAT) at 0.4 cm2V−1s−1 and transconductance (gm) of 10−6 S. The flexible corkbased electrolyte-gated transistors on paper are also demonstrated, operating at low voltage (Von <1V) and exhibiting transconductance (gm) values of 10−4 S and saturation mobilities (SAT) higher than 10 cm2V−1s−1.Pereira, LuísGaspar, CristinaRUNAlém, António Pedro Domingues2019-09-02T14:37:34Z2019-0620192019-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/79927enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-22T17:40:41Zoai:run.unl.pt:10362/79927Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-22T17:40:41Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Iontronics with cork
title Iontronics with cork
spellingShingle Iontronics with cork
Além, António Pedro Domingues
Cork
cork electronics
cellulose
paper electronics
electrolytes
electrolytegated transistors
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia dos Materiais
title_short Iontronics with cork
title_full Iontronics with cork
title_fullStr Iontronics with cork
title_full_unstemmed Iontronics with cork
title_sort Iontronics with cork
author Além, António Pedro Domingues
author_facet Além, António Pedro Domingues
author_role author
dc.contributor.none.fl_str_mv Pereira, Luís
Gaspar, Cristina
RUN
dc.contributor.author.fl_str_mv Além, António Pedro Domingues
dc.subject.por.fl_str_mv Cork
cork electronics
cellulose
paper electronics
electrolytes
electrolytegated transistors
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia dos Materiais
topic Cork
cork electronics
cellulose
paper electronics
electrolytes
electrolytegated transistors
Domínio/Área Científica::Engenharia e Tecnologia::Engenharia dos Materiais
description This work reports an unprecedented functionalization of one of the most unique natural materials on Earth, cork, in the field of electronics. Motivated by the excessive waste of the cork industry and resorting to other natural and abundant materials in nature, it was possible to successfully develop electrolytes based on cork. In a primary approach, there are several steps considered and constantly reevaluated in order to produce the first functional cork-based electrolyte. An aqueous lithium salts and urea solvent system is essential, as well as a natural binding agent, herein a cellulose derivative, and an acid neutralization. Secondly, these novel cork-based electrolytes are put to the test as the gate dielectric on EGTs with a cellulose based semiconducting ink, and their electrical performance is studied. The cork-based electrolytes show interesting properties for applications such as supercapacitors, electronic wearables or electrochromic displays due to their electrical double-layer capacitance (CDL) values of more than 8 μF cm−2 and ionic conductivity in the order of 10−4 S cm−1. Carboxymethyl cellulose and zinc oxide EGTs on cork composite substrates with the functional cork material as the gate dielectric exhibit low working voltage (<2 V), Ion/Ioff ratios of 103, a subthreshold swing (SS) lower than 0.3 Vdec−1, low saturation mobilities (SAT) at 0.4 cm2V−1s−1 and transconductance (gm) of 10−6 S. The flexible corkbased electrolyte-gated transistors on paper are also demonstrated, operating at low voltage (Von <1V) and exhibiting transconductance (gm) values of 10−4 S and saturation mobilities (SAT) higher than 10 cm2V−1s−1.
publishDate 2019
dc.date.none.fl_str_mv 2019-09-02T14:37:34Z
2019-06
2019
2019-06-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/79927
url http://hdl.handle.net/10362/79927
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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