Fabricación de películas delgadas conductoras y transparentes a partir de nanohilos de cobre

dc.contributor.advisorArdila Vargas, Angel Miguel
dc.contributor.authorPerez Ayala, Yineth Melissa
dc.contributor.educationalvalidatorCarriazo Baños, Jose Gregorio
dc.contributor.researchgroupGrupo de física aplicadaspa
dc.date.accessioned2024-01-30T15:59:26Z
dc.date.available2024-01-30T15:59:26Z
dc.date.issued2023
dc.descriptionilustración, fotografías, diagramasspa
dc.description.abstractThe main objective of this project was to fabricate copper nanowires (CuNWs) thin films with good optical and electrical properties, i.e., conductive, and transparent electrodes. For this purpose, different procedures were assessed to obtain Cu nanowires by a hydrothermal method, where tests of optimum reducing agents’ concentrations were done. The synthesis was carried out using copper (II) chloride dihydrate (CuCl2· 2H2O) as copper precursor and Octadecylamine (ODA) as surfactant. In this first phase of the project, the results obtained by using ascorbic acid as a reducing agent were compared with those obtained with glucose, where the latter produced the best nanowires. After the hydrothermal procedure CuNWs were obtained together with other unwanted nanostructures. Therefore, a suitable purification method was researched. The nanowires were kept in hexane and thin films were fabricated by the spin coating method. Thin films were characterized using the following techniques: scanning electron microscopy (SEM), UV-VIS spectrophotometry studies, IR, and sheet resistance measurement. The above with the intention of studying the optoelectrical and morphological properties of the Cu nanowire thin films as a function of the synthesis conditions. The results included transmittance spectrum between 28 and 80 % at λ = 550 nm. Also, Rs values were found to be 4.61, 8.76 and 1183 Ω/□. Moreover, reduction methods were investigated and PEDOT:PSS films were used to improve thin films properties. This work was conducted with the aim of fabricating conductive and transparent electrodes that can be used as substitutes of indium tin oxide (ITO) electrodes.eng
dc.description.abstractEl objetivo principal en este proyecto fue fabricar películas delgadas de nanohilos de cobre (Cu) que presentaran buenas propiedades ópticas y eléctricas, es decir, películas conductivas y transparentes. Para ello se probaron diferentes procedimientos para la obtención de los nanohilos de Cu mediante síntesis hidrotérmica, procurando establecer la óptima concentración de agentes de reducción usando ácido ascórbido y glucosa. Además, la síntesis se realizó usando cloruro de cobre (II) dihidratado (CuCl2・ 2H2O) como precursor del cobre y Octadecilamina (ODA) como surfactante. En primer lugar se determinó que el uso de glucosa permitía obtener mejores nanohilos. Así mismo, el método hidrotérmico fue usado en la síntesis y se obtuvieron tanto nanohilos como nanopartículas, por lo que un método de purificación se usó para la separación de los nanohilos. Las películas delgadas fabricadas por Spin Coating se caracterizaron usando las siguientes técnicas: microscopía electrónica de barrido (MEB), espectrofotometría UV-VIS, IR, medición de la resistencia y de la resistencia de hoja. Con esto se determinaron las propiedades optoeléctricas y morfológicas de las películas delgadas de nanohilos de Cu. Se encontraron espectros de transmitancia de entre 28 y 80% y resistencia de hoja de 4.61, 8.76 y 1183 Ω/□. Métodos de reducción fueron estudiados para mejorar la conductividad de las películas así como uso de PEDOT:PSS para mejorar sus propiedades. Todo lo anterior se hizo con el ánimo de fabricar electrodos conductivos y transparentes que puedan ser usados como sustituto de los electrodos de ITO (óxido de indio y estaño). (Texto tomado de la fuente)spa
dc.description.degreelevelMaestríaspa
dc.description.degreenameMagíster en Ciencias - Físicaspa
dc.description.researchareaFísica aplicadaspa
dc.format.extentxvi, 78 páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/85519
dc.language.isospaspa
dc.publisherUniversidad Nacional de Colombiaspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotáspa
dc.publisher.facultyFacultad de Cienciasspa
dc.publisher.placeBogotá, Colombiaspa
dc.publisher.programBogotá - Ciencias - Maestría en Ciencias - Físicaspa
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseReconocimiento 4.0 Internacionalspa
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/spa
dc.subject.ddc530 - Física::535 - Luz y radiación relacionadaspa
dc.subject.ddc530 - Física::539 - Física modernaspa
dc.subject.ddc540 - Química y ciencias afines::541 - Química físicaspa
dc.subject.proposalNanohilos de cobrespa
dc.subject.proposalElectrodo transparentespa
dc.subject.proposalSíntesis hidrotérmicaspa
dc.subject.proposalConductividadspa
dc.subject.proposalPelícula delgadaspa
dc.subject.proposalCopper nanowireseng
dc.subject.proposalTransparent electrodeseng
dc.subject.proposalHydrothermal synthesiseng
dc.subject.proposalConductivityeng
dc.subject.proposalThin filmseng
dc.subject.wikidatananowireeng
dc.subject.wikidatananohilospa
dc.subject.wikidatareducing agenteng
dc.subject.wikidataagente reductorspa
dc.subject.wikidatananostructureeng
dc.subject.wikidatananoestructuraspa
dc.titleFabricación de películas delgadas conductoras y transparentes a partir de nanohilos de cobrespa
dc.title.translatedFabrication of copper nanowires based transparent and conductive thin filmseng
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.redcolhttp://purl.org/redcol/resource_type/TMspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
dcterms.audience.professionaldevelopmentInvestigadoresspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa

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