Publication: Influencia del orden estructural en el comportamiento luminiscente de óxidos transparentes conductores complejos
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2021-03-17
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Universidad Complutense de Madrid
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Abstract
En la presente Tesis doctoral se exponen y discuten los principales resultados obtenidos de la investigación realizada en tres sistemas pertenecientes a la familia de los Óxidos Transparentes Conductores (TCO). Los TCO han atraído particular interés en las últimas décadas debido a la demanda creciente de dispositivos basados en sus propiedades optoelectrónicas. Esto se debe, principalmente, a que poseen un gran intervalo de energía prohibida (≤ 3.5 eV), lo que convierte a estos materiales en referentes en el área de la tecnología de las comunicaciones. Los ejemplos más representativos de esta familia son ZnO, TiO2, Ga2O3 o In2O3, muy atractivos para un amplio abanico de aplicaciones, debido a su multifuncionalidad. Además, en circunstancias adecuadas, algunos de ellos pueden ser la base de diferentes estructuras complejas, que originan series homólogas, las cuales constituyen una alternativa eficiente para obtener nuevos materiales de banda ancha con propiedades ópticas/eléctricas modificables. En este sentido, la química juega un papel primordial, ya que este comportamiento puede mejorarse controlando ciertos parámetros químicos y estrategias de síntesis, para estudiar la influencia de la morfología, el tamaño de partícula, las variaciones de composición, la ingeniería de defectos, entre otros, en sus propiedades físico-químicas...
In this work, the main results obtained from the research carried out on three systems that belongs to the family of the Transparent Conductor Oxides (TCOs). TCOs have attracted particular interest in recent decades due to the rising demand for devices based on their optoelectronic properties. This is mainly due to the fact that they possess a large range of forbidden energy (≤ 3.5 eV), which makes these materials a reference in the area of communications technology. The most representative examples of this family are ZnO, TiO2, Ga2O3 or In2O3, very attractive for a wide range of applications, due to their multifunctionality. Moreover, under appropriate circumstances, some of them can be the basis of different complex structures, which originate homologous series, which constitute an efficient alternative to obtain new broadband materials with modifiable optical/electrical properties. In this sense, chemistry plays a fundamental role, since this behaviour can be improved by controlling certain chemical parameters and synthesis strategies, to study the influence of morphology, particle size, composition variations, defect engineering, among others, on their physical-chemical properties...
In this work, the main results obtained from the research carried out on three systems that belongs to the family of the Transparent Conductor Oxides (TCOs). TCOs have attracted particular interest in recent decades due to the rising demand for devices based on their optoelectronic properties. This is mainly due to the fact that they possess a large range of forbidden energy (≤ 3.5 eV), which makes these materials a reference in the area of communications technology. The most representative examples of this family are ZnO, TiO2, Ga2O3 or In2O3, very attractive for a wide range of applications, due to their multifunctionality. Moreover, under appropriate circumstances, some of them can be the basis of different complex structures, which originate homologous series, which constitute an efficient alternative to obtain new broadband materials with modifiable optical/electrical properties. In this sense, chemistry plays a fundamental role, since this behaviour can be improved by controlling certain chemical parameters and synthesis strategies, to study the influence of morphology, particle size, composition variations, defect engineering, among others, on their physical-chemical properties...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Ciencias Químicas, Departamento de Química Inorgánica I, leída el 18-09-2020