Exploració per tema "Dispositius optoelectrònics"
Ara es mostren els items 21-32 de 32
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Optical characterization of molecular beam epitaxy grown GaAs nanotrees
(Universitat Politècnica de Catalunya, 2018-07)
Treball Final de Grau
Accés obertIn the aim to grow vertical self-catalyzed GaAs nanowires on [100] Si, fancy structures with a tapered shape resembling a tree were observed. They were called nanotrees. This is the first time that vertical growth has been ... -
Optical phase effects in reconfigurable microwave photonic filters with multiple wavelength input
(2021-11)
Article
Accés obertMicrowave photonic filters with a multiple wavelength input are analyzed. A comprehensive model assessing the impact of the phase characteristic of the optical stage is presented from which optimized design rules have been ... -
Optical scattering in Phosphor-Converted LEDs
(Universitat Politècnica de Catalunya, 2015-05)
Projecte/Treball Final de Carrera
Accés restringit per acord de confidencialitat -
Optoelectronic devices for next generation optical fiber communications
(Universitat Politècnica de Catalunya, 2016-07-14)
Treball Final de Grau
Accés obertTo meet the high demand on data traffic, it is essential the optimization of optical communication systems, specially, in terms of spectral efficiency as well as transmission rate In this thesis, the study carried out two ... -
Photocurrent-detected 2D electronic spectroscopy reveals ultrafast hole transfer in operating PM6/Y6 organic solar cells
(2021-04-29)
Article
Accés obertThe performance of nonfullerene-acceptor-(NFA)-based organic solar cells is rapidly approaching the efficiency of inorganic cells. The chemical versatility of NFAs extends the light-harvesting range to the infrared, while ... -
Photodetectors based on low-dimensional materials and hybrid systems
(Universitat Politècnica de Catalunya, 2016-06-13)
Tesi
Accés obertIn the last decade, two-dimensional (2D) materials have attracted attention both in the nascent field of flexible nanotechnology as well as in more conventional semiconductor technol-ogies. Within the rapidly expanding ... -
Reducing the circadian input from self-luminous devices using hardware filters and software applications
(2015-12)
Article
Accés obertThe widespread use of self-luminous devices at nighttime (cell-phones, computers, and tablets) raises some reasonable concerns regarding their effects on human physiology. Light at night is a known circadian disruptor, ... -
Simulation of thermophotovoltaic devices based on c-Ge substrates
(Universitat Politècnica de Catalunya, 2023-02-02)
Projecte Final de Màster Oficial
Accés obertThe project consists of carrying out simulations using the ATLAS tool from Silvaco International of c-Ge thermophotovoltaic (TPV) devices. Before going into device simulation, we develop a way to incorporate the surface ... -
Single-layer Molybdenum disulfide photodetectors
(Universitat Politècnica de Catalunya, 2012-02)
Projecte/Treball Final de Carrera
Accés obert
Realitzat a/amb: École polytechnique fédérale de Lausanne[ANGLÈS] Two-dimensional (2D) materials are very attractive candidates for use in next-generation nanoelectronic devices. Compared to one-dimensional materials, with 2D materials is relatively easy to fabricate complex ... -
Sistema de monitorización de la potencia del láser de un sistema lidar atmosférico
(Universitat Politècnica de Catalunya, 2012-12-19)
Projecte/Treball Final de Carrera
Accés obert[ANGLÈS] Design and implementation of a monitoring system of the power emitted by an atmospherical pulsed lidar (LIght Detection and Ranging) by measurements of diffuse radiation from the laser. The system allows the regular ... -
Solution-growth and optoelectronic properties of ZnO:Cl@ZnS core-shell nanowires with tunable shell thickness
(2013-04-05)
Article
Accés restringit per política de l'editorialArrays of vertically aligned ZnO:Cl@ZnS core–shell nanowires (NWs) were grown by a facile low-cost, high-yield and seed-free two-step process. These NWs were used to demonstrate the potential of 3D electrodes based on ... -
Zero change CMOS microring modulators at 1550 nm: Modeling and characterization
(Universitat Politècnica de Catalunya, 2017-06)
Treball Final de Grau
Accés obert
Realitzat a/amb: Massachusetts Institute of TechnologyWhile optical communications are the standard solution for long haul communications, its adoption for short range (i.e, intra- and inter-chip interconnects and metro-area) transmission systems, where a considerable increase ...