Iontronics with cork
Autor(a) principal: | |
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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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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 |
_version_ |
1817545705138421760 |