{"id":79899,"date":"2006-12-05T00:00:00","date_gmt":"2006-12-05T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-espectroscopico-de-materiales-fotoluminiscentes-con-metales-de-transicion-y-tierras-raras\/"},"modified":"2006-12-05T00:00:00","modified_gmt":"2006-12-05T00:00:00","slug":"estudio-espectroscopico-de-materiales-fotoluminiscentes-con-metales-de-transicion-y-tierras-raras","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/estudio-espectroscopico-de-materiales-fotoluminiscentes-con-metales-de-transicion-y-tierras-raras\/","title":{"rendered":"Estudio espectrosc\u00f3pico de materiales fotoluminiscentes con metales de transici\u00f3n y tierras raras."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Revilla Sara Garcia <\/strong><\/h2>\n<p>En esta tesis se pretende desvelar los mecanismos microsc\u00f3picos responsables de las propiedades \u00f3pticas de una gran variedad de iones de tierras raras (tr) y metales de transici\u00f3n (mt). As\u00ed, se caracteriza el fen\u00f3meno de upconversion observado en ciertos compuestos impurificados con distintas combinaciones de tr-tr como el yb3+-er3+ o el yb3+-tb3+ en ky(wo4)2, y de tr-mt como el yb3+-mn2+ o el yb3+-ni2+. Esto ha permitido investigar diferentes procesos de excitaci\u00f3n cooperativos, transferencia de energ\u00eda y fen\u00f3menos de relajaci\u00f3n radiactivos y no radiativos. Por otro lado, se estudia el origen de las bandas de absorci\u00f3n y luminscencia del cscdbr3: eu2+ y se propone una asignaci\u00f3n de las mismas. Adem\u00e1s, se establecen correlaciones estructurales en torno al i\u00f3n \u00f3pticamente activo mediante medidas de espectroscop\u00eda \u00f3ptica en condiciones de alta presi\u00f3n. As\u00ed, se correlacionan los desplazamientos de las bandas de excitaci\u00f3n y emisi\u00f3n del ti3+ en al2o3 con los cambios de estructura local del complejo de ti3+ inducidos por presi\u00f3n. Por otro lado, se identifica una transici\u00f3n de fase estructural de la forma roja a una amarilla del pt(bpy)cl2 a 17.7 kbar.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio espectrosc\u00f3pico de materiales fotoluminiscentes con metales de transici\u00f3n y tierras raras.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio espectrosc\u00f3pico de materiales fotoluminiscentes con metales de transici\u00f3n y tierras raras. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Revilla Sara Garcia <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Cantabria<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 12\/05\/2006<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Barroso Rafael Valiente<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Miguel Moreno mas <\/li>\n<li>victor Lavin della ventura (vocal)<\/li>\n<li>Mar\u00eda  del carmen Marco de lucas (vocal)<\/li>\n<li> Dorenbos (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Revilla Sara Garcia En esta tesis se pretende desvelar los mecanismos microsc\u00f3picos responsables de las propiedades \u00f3pticas [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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