Search results for "perovskita"
showing 3 items of 3 documents
Novel architectures and materials for perovskite opto‐electronics
2018
Photovoltaic and light emitting devices based on perovskites have shown an impressive development in the last years. Despite the fast progress, many studies relied still on a trial and error approach in order to further boost device efficiencies. The aim of the thesis is therefore to get further inside into phenomena related to the fundamental photophysics on both perovskite solar cells and LEDs. The work has been structured in three parts: Perovskite‐Perovskite Homojunctions via Compositional Doping. One of the most important properties of semiconductors is the possibility to control their electronic properties via intentional doping. Nevertheless doping in perovskite remains nearly unexpl…
Preparation and characterisation of optical and optoelectronic devices based in two-dimensional semiconductors
2020
In the Materials Science field, two-dimensional materials have gained the scientific community attention in recent years. The change and the appearance of novel properties when their thickness is reduced to nanometric scale has special interest for its fundamental properties study for, from this base, the design and its implementation in devices. The wide variety of materials with the possibility of being exfoliated at the two-dimensional level opens the field to different applications, from optoelectronic devices, detection and sensing, energy storage, catalysis, medical applications and quantum information technologies, among others. This thesis gathers results in both directions: a funda…
Ionic-electronic interaction in optoelectronic and sensing devices
2016
En este trabajo se estudian las interacciones entre cargas electrónicas e iónicas y sus aplicaciones en sensores y dispositivos optoelectrónicos. El mecanismo de funcionamiento de los dispositivos optoelectrónicos actualmente más comunes, como los transistores de efecto de campo de capa fina (TFTs), los diodos emisores de luz (LEDs) y las células solares se basa solamente en procesos electrónicos, lo que significa que los efectos de cargas iónicas están ausentes, son irrelevantes o incluso perjudiciales para el propósito de dichos dispositivos. Sin embargo, muchas aplicaciones se benefician de la presencia de iones en la estructura de un dispositivo. Un ejemplo típico en el campo de investi…