Now showing items 1-13 of 13

  • Design and implementation of an organic semi-transparent photovoltaic device 

    Puig Ribas, Jordi (Universitat Politècnica de Catalunya, 2016-06)
    Bachelor thesis
    Open Access
    Organic polymeric solar cells require thin absorber layers due to intrinsic low exciton diffusion distances, thus showing low absorption of light. They are also characterized by having a low absorption peak, whose position ...
  • Double resonant character in an optical cavity for high performance and stable polymer solar cells 

    Liu, Quan (Universitat Politècnica de Catalunya, 2018-03-23)
    Doctoral thesis
    Open Access
    Covenantee:  Karlsruher Institut für Technologie
    Solution-processed thin film solar cells emerged as very promising photovoltaic technologies suitable for a low cost roll-to-roll upscale production. Such thin film character also ensures lightweight and flexibility for ...
  • Fluorescence quantum yield role on the Perovskite solar cell efficiency 

    Kramarenko, Mariia (Universitat Politècnica de Catalunya, 2016-09-09)
    Master thesis
    Restricted access - confidentiality agreement
  • Frequency doubling in SBN crystal affected by poling and thermal treatment 

    Yao, Can (Universitat Politècnica de Catalunya, 2009-09-09)
    Master thesis
    Open Access
    The random anti-parallel micro-ferroelectric domains in SBN (Strontium-Barium Niobate, Sr0.61Ba0.39Nb2O3, ) crystal can be used for efficient nonlinear optical processes at different frequencies. The ferroelectric domains ...
  • Interacció Paramètrica no Lineal en Materials amb Nano-Estructuració Ordenada 

    Maymó Camós, Marc (Universitat Politècnica de Catalunya, 2007-11-29)
    Doctoral thesis
    Open Access
    Les interaccions no lineals de segon ordre són, probablement, uns dels processos de l'òptica no lineal més utilitzats i rellevants en quant a les seves aplicacions. Aquestes interaccions només són eficients en materials ...
  • Light enhancements in nano-structured solar cells 

    Pastorelli, Francesco (Universitat Politècnica de Catalunya, 2013-12-09)
    Doctoral thesis
    Open Access
    In this century some of our main issues are energy shortage and pollution. This work will briefly describe these problems, proposing a plan of action combining energy saving and different sustainable energy sources. Within ...
  • Light generation and manipulation from nonlinear randomly distributed domains in SBN 

    Yao, Can (Universitat Politècnica de Catalunya, 2014-06-25)
    Doctoral thesis
    Open Access
    Disordered media with refractive index variations can be found in the atmosphere, the ocean, and in many materials or biological tissues. Several technologies that make use of such random media, as image formation, satellite ...
  • Light harvesting in fiber array organic solar cells 

    Mariano Juste, Marina (Universitat Politècnica de Catalunya, 2014-10-31)
    Doctoral thesis
    Open Access
    Considering that the most abundant renewable energy source is the Sun, photovoltaic technology possesses one of the highest potentials to provide environmental benign and sustainable energy worldwide. Currently, most of ...
  • Multi-junction thin film solar cells for an optimal light harvesting 

    Mantilla Pérez, Paola (Universitat Politècnica de Catalunya, 2017-04-24)
    Doctoral thesis
    Open Access
    Thin film photovoltaics encompass a group of technologies able to harvest light within a few microns thickness. The reduced thickness allows a low cost of manufacture while making the films flexible and adaptable to ...
  • Nonlinear optical properties of organo-metallic films 

    Mariano Juste, Marina (Universitat Politècnica de Catalunya, 2009-07-09)
    Master thesis
    Open Access
    Joining organic molecules and metallic nanoparticles into coupled heterostruc- tures allows tuning their optical properties and o®ers novel possibilities for manipulating their emission patterns. This Master Thesis is ...
  • Photon control in nano-structured organic photovoltaic materials 

    Betancur Lopera, Rafael (Universitat Politècnica de Catalunya, 2013-07-10)
    Doctoral thesis
    Open Access
    Organic photovoltaic (OPV) technology has emerged as a potential cost-effective solution to produce electrical energy. The foreseen low manufacturing costs combined with features as semi-transparency or mechanical flexibility ...
  • Second Harmonic Generation in Photonic Crystals 

    Trull Silvestre, José Francisco (Universitat Politècnica de Catalunya, 1999-12-21)
    Doctoral thesis
    Open Access
    Photonic crystals emerged at the end of the last decade as a new frame to control the interaction between radiation and matter. The potential advances that such structures could report in photonics technology has lead to ...
  • Whispering gallery microresonator for second harmonic light generation 

    Domínguez Juárez, Jorge Luís (Universitat Politècnica de Catalunya, 2014-07-22)
    Doctoral thesis
    Open Access
    In recent years, it has been proposed that circular microresonators may become an important element in the core of many photonic devices. The high Q-factors seen in fused silica micro-spheres and micro-toroids for light ...