Publicação
Sustainable dual-mode smart windows for energy-efficient buildings
| Resumo: | Electrochromic devices (ECDs) combining visible/near-infrared (NIR) transparent amorphous indium zinc oxide (a-IZO) external layers with innovative NIR-emitting electrolytes composed of red seaweed-derived kappa-carrageenan (kappa-Cg) polysaccharide, glycerol (Gly), and erbium triflate (ErTrif(3)center dot xH(2)O) are proposed as a valuable technological solution for the development of smart windows providing less heating demand, less glare and more indoors human comfort for the new generation of energy-efficient buildings. The electrolyte preparation is cheap, clean, and fast. The optimized sample including 50 wt% Gly/kappa-Cg and 40 wt% ErTrif(3)center dot xH(2)O/kappa-Cg exhibits the highest ionic conductivity (1.5 X 10(-4) S cm(-1) at 20 degrees C) and displays ultraviolet (UV)/blue and NIR emissions associated with the kappa-Cg-based host and the Er3+ ions (I-4(15/2) -> I-4(13/2)), respectively. The 5-layer configuration ECD tested demonstrated fast switching time (50 s), high electrochromic contrast (transmittance variations of 46/51% at 550/1000 nm), high optical density change (0.89/0.75 at 550/1000 nm), outstanding coloration efficiency (450th cycle = -15902/-13400 cm(2) C-1 and +3072/+2589 cm(2) C-1 at 550/1000 nm for coloration and bleaching, respectively), excellent electrochemical stability, and self-healing after mechanical damage. The ECD encompasses two voltage-operated modes: semibright warm (+3.0 V, transmittances of 52/61% at 550/1000 nm) and dark cold (-3.0 V, transmittances of 7/11% at 550/1000 nm). |
|---|---|
| Autores principais: | Nunes, Silvia C. |
| Outros Autores: | Saraiva, Sofia M.; Pereira, Rui Francisco Gonçalves Pinto Fernandes; Pereira, Sonia; Silva, Maria Manuela; Carlos, Luis D.; Fortunato, Elvira; Ferreira, Rute A. S.; Rego, Rosa; Bermudez, Veronica de Zea |
| Assunto: | kappa-carrageenan polysaccharide erbium triflate NIR-emitting smart windows energy-efficient glazing for buildings window daylighting control glare reduction heating saving κ-carrageenan polysaccharide Ciências Naturais::Ciências Químicas |
| Ano: | 2019 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867439181895041024 |
|---|---|
| author | Nunes, Silvia C. |
| author2 | Saraiva, Sofia M. Pereira, Rui Francisco Gonçalves Pinto Fernandes Pereira, Sonia Silva, Maria Manuela Carlos, Luis D. Fortunato, Elvira Ferreira, Rute A. S. Rego, Rosa Bermudez, Veronica de Zea |
| author2_role | author author author author author author author author author |
| author_facet | Nunes, Silvia C. Saraiva, Sofia M. Pereira, Rui Francisco Gonçalves Pinto Fernandes Pereira, Sonia Silva, Maria Manuela Carlos, Luis D. Fortunato, Elvira Ferreira, Rute A. S. Rego, Rosa Bermudez, Veronica de Zea |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Nunes, Silvia C.\"},{\"Person.name\":\"Saraiva, Sofia M.\"},{\"Person.name\":\"Pereira, Rui Francisco Gonçalves Pinto Fernandes\"},{\"Person.name\":\"Pereira, Sonia\"},{\"Person.name\":\"Silva, Maria Manuela\"},{\"Person.name\":\"Carlos, Luis D.\"},{\"Person.name\":\"Fortunato, Elvira\"},{\"Person.name\":\"Ferreira, Rute A. S.\"},{\"Person.name\":\"Rego, Rosa\"},{\"Person.name\":\"Bermudez, Veronica de Zea\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Nunes, Silvia C. Saraiva, Sofia M. Pereira, Rui Francisco Gonçalves Pinto Fernandes Pereira, Sonia Silva, Maria Manuela Carlos, Luis D. Fortunato, Elvira Ferreira, Rute A. S. Rego, Rosa Bermudez, Veronica de Zea |
| datacite.date.Accepted.fl_str_mv | 2019-01-01T00:00:00Z |
| datacite.date.embargoed.fl_str_mv | 10000-01-01T00:00:00Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | kappa-carrageenan polysaccharide erbium triflate NIR-emitting smart windows energy-efficient glazing for buildings window daylighting control glare reduction heating saving κ-carrageenan polysaccharide Ciências Naturais::Ciências Químicas |
| datacite.titles.title.fl_str_mv | Sustainable dual-mode smart windows for energy-efficient buildings |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Nunes, Silvia C. Saraiva, Sofia M. Pereira, Rui Francisco Gonçalves Pinto Fernandes Pereira, Sonia Silva, Maria Manuela Carlos, Luis D. Fortunato, Elvira Ferreira, Rute A. S. Rego, Rosa Bermudez, Veronica de Zea |
| dc.date.Accepted.fl_str_mv | 2019-01-01T00:00:00Z |
| dc.date.embargoed.fl_str_mv | 10000-01-01T00:00:00Z |
| dc.format.none.fl_str_mv | application/pdf application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/73094 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | American Chemical Society |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | kappa-carrageenan polysaccharide erbium triflate NIR-emitting smart windows energy-efficient glazing for buildings window daylighting control glare reduction heating saving κ-carrageenan polysaccharide Ciências Naturais::Ciências Químicas |
| dc.title.fl_str_mv | Sustainable dual-mode smart windows for energy-efficient buildings |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Electrochromic devices (ECDs) combining visible/near-infrared (NIR) transparent amorphous indium zinc oxide (a-IZO) external layers with innovative NIR-emitting electrolytes composed of red seaweed-derived kappa-carrageenan (kappa-Cg) polysaccharide, glycerol (Gly), and erbium triflate (ErTrif(3)center dot xH(2)O) are proposed as a valuable technological solution for the development of smart windows providing less heating demand, less glare and more indoors human comfort for the new generation of energy-efficient buildings. The electrolyte preparation is cheap, clean, and fast. The optimized sample including 50 wt% Gly/kappa-Cg and 40 wt% ErTrif(3)center dot xH(2)O/kappa-Cg exhibits the highest ionic conductivity (1.5 X 10(-4) S cm(-1) at 20 degrees C) and displays ultraviolet (UV)/blue and NIR emissions associated with the kappa-Cg-based host and the Er3+ ions (I-4(15/2) -> I-4(13/2)), respectively. The 5-layer configuration ECD tested demonstrated fast switching time (50 s), high electrochromic contrast (transmittance variations of 46/51% at 550/1000 nm), high optical density change (0.89/0.75 at 550/1000 nm), outstanding coloration efficiency (450th cycle = -15902/-13400 cm(2) C-1 and +3072/+2589 cm(2) C-1 at 550/1000 nm for coloration and bleaching, respectively), excellent electrochemical stability, and self-healing after mechanical damage. The ECD encompasses two voltage-operated modes: semibright warm (+3.0 V, transmittances of 52/61% at 550/1000 nm) and dark cold (-3.0 V, transmittances of 7/11% at 550/1000 nm). |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/54c461e9-80bc-4391-a840-1e7eb7063505/download |
| id | rum_d757dcfdef0ea2a13dde4d1b8f991998 |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/73094 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/73094 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Nunes, Silvia C. Saraiva, Sofia M. Pereira, Rui Francisco Gonçalves Pinto Fernandes Pereira, Sonia Silva, Maria Manuela Carlos, Luis D. Fortunato, Elvira Ferreira, Rute A. S. Rego, Rosa Bermudez, Veronica de Zea |
| publishDate | 2019 |
| publisher.none.fl_str_mv | American Chemical Society |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engAmerican Chemical SocietyporElectrochromic devices (ECDs) combining visible/near-infrared (NIR) transparent amorphous indium zinc oxide (a-IZO) external layers with innovative NIR-emitting electrolytes composed of red seaweed-derived kappa-carrageenan (kappa-Cg) polysaccharide, glycerol (Gly), and erbium triflate (ErTrif(3)center dot xH(2)O) are proposed as a valuable technological solution for the development of smart windows providing less heating demand, less glare and more indoors human comfort for the new generation of energy-efficient buildings. The electrolyte preparation is cheap, clean, and fast. The optimized sample including 50 wt% Gly/kappa-Cg and 40 wt% ErTrif(3)center dot xH(2)O/kappa-Cg exhibits the highest ionic conductivity (1.5 X 10(-4) S cm(-1) at 20 degrees C) and displays ultraviolet (UV)/blue and NIR emissions associated with the kappa-Cg-based host and the Er3+ ions (I-4(15/2) -> I-4(13/2)), respectively. The 5-layer configuration ECD tested demonstrated fast switching time (50 s), high electrochromic contrast (transmittance variations of 46/51% at 550/1000 nm), high optical density change (0.89/0.75 at 550/1000 nm), outstanding coloration efficiency (450th cycle = -15902/-13400 cm(2) C-1 and +3072/+2589 cm(2) C-1 at 550/1000 nm for coloration and bleaching, respectively), excellent electrochemical stability, and self-healing after mechanical damage. The ECD encompasses two voltage-operated modes: semibright warm (+3.0 V, transmittances of 52/61% at 550/1000 nm) and dark cold (-3.0 V, transmittances of 7/11% at 550/1000 nm).application/pdfapplication/pdfporSustainable dual-mode smart windows for energy-efficient buildingsNunes, Silvia C.Saraiva, Sofia M.Pereira, Rui Francisco Gonçalves Pinto FernandesPereira, SoniaSilva, Maria ManuelaCarlos, Luis D.Fortunato, ElviraFerreira, Rute A. S.Rego, RosaBermudez, Veronica de ZeaHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptISSNIsPartOf2574-0962DOIIsPartOf10.1021/acsaem.8b0204120192021-05-28T18:07:25Z10000-01-01T00:00:00Z2019-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/73094http://purl.org/coar/access_right/c_16ecrestricted accesskappa-carrageenan polysaccharideerbium triflateNIR-emitting smart windowsenergy-efficient glazing for buildingswindow daylighting controlglare reductionheating savingκ-carrageenan polysaccharidehttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Ciências Naturais::Ciências Químicas911569 bytes586190 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_f1cfapplication/pdffulltexthttps://repositorium.uminho.pt/bitstreams/54c461e9-80bc-4391-a840-1e7eb7063505/downloadhttp://purl.org/coar/access_right/c_f1cfapplication/pdffulltexthttps://repositorium.uminho.pt/bitstreams/859d7995-461c-4d09-b99b-5dd70fb86e4c/download |
| spellingShingle | Sustainable dual-mode smart windows for energy-efficient buildings Nunes, Silvia C. kappa-carrageenan polysaccharide erbium triflate NIR-emitting smart windows energy-efficient glazing for buildings window daylighting control glare reduction heating saving κ-carrageenan polysaccharide Ciências Naturais::Ciências Químicas |
| status | SINGLETON |
| subject.fl_str_mv | kappa-carrageenan polysaccharide erbium triflate NIR-emitting smart windows energy-efficient glazing for buildings window daylighting control glare reduction heating saving κ-carrageenan polysaccharide |
| subject.other.fl_str_mv | Ciências Naturais::Ciências Químicas |
| title | Sustainable dual-mode smart windows for energy-efficient buildings |
| title_full | Sustainable dual-mode smart windows for energy-efficient buildings |
| title_fullStr | Sustainable dual-mode smart windows for energy-efficient buildings |
| title_full_unstemmed | Sustainable dual-mode smart windows for energy-efficient buildings |
| title_short | Sustainable dual-mode smart windows for energy-efficient buildings |
| title_sort | Sustainable dual-mode smart windows for energy-efficient buildings |
| topic | kappa-carrageenan polysaccharide erbium triflate NIR-emitting smart windows energy-efficient glazing for buildings window daylighting control glare reduction heating saving κ-carrageenan polysaccharide Ciências Naturais::Ciências Químicas |
| topic_facet | kappa-carrageenan polysaccharide erbium triflate NIR-emitting smart windows energy-efficient glazing for buildings window daylighting control glare reduction heating saving κ-carrageenan polysaccharide Ciências Naturais::Ciências Químicas |
| url | https://hdl.handle.net/1822/73094 |
| visible | 1 |