Ara es mostren els items 21-34 de 34

    • Improved decryption quality and security of a joint transform correlator-based encryption system 

      Vilardy, Juan Manuel; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (IOPScience, 2012-12-06)
      Article
      Accés obert
    • InSb/InP core-shell colloidal quantum dots for sensitive and fast short-wave infrared photodetectors 

      Peng, Lucheng; Wang, Yongjie; Ren, Yurong; Wang, Zhuoran; Cao, Pengfei; Konstantatos, Gerasimos (2024-02-02)
      Article
      Accés obert
      Colloidal quantum dot (CQD) technology is considered the main contender toward a low-cost high-performance optoelectronic technology platform for applications in the short-wave infrared (SWIR) to enable 3D imaging, LIDAR ...
    • Ionic liquid gating in encapsulated hBN/MoS2/hBN devices 

      Rodan Legrain, Daniel (Universitat Politècnica de Catalunya, 2016-05-25)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Massachusetts Institute of Technology
      The ability to produce few-atoms-thick two-dimensional materials of high quality such as graphene, transition-metal dichalcogenides and hexagonal boron nitride is a major improvement in condensed-matter physics and in ...
    • Laser feedback interferometry with semiconductor lasers 

      García Gómez, Pablo (Universitat Politècnica de Catalunya, 2017-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   University of Queensland
      Laser Feedback Interferometry is based on the self-mixing effect. When light emitted from a laser reflects in a target and is reinjected into its cavity, the optical parameters of the laser change providing information ...
    • Optical characterization of molecular beam epitaxy grown GaAs nanotrees 

      Garcia Garcia, óscar (Universitat Politècnica de Catalunya, 2018-07)
      Treball Final de Grau
      Accés obert
      In 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 correlation with variable discrimination capability: experimental results 

      Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet; Kotynski, Rafal; Chalasinska-Macukow, Katarzyna (2000)
      Article
      Accés obert
    • Optical phase effects in reconfigurable microwave photonic filters with multiple wavelength input 

      Nuño Gómez, Daniel-Juan; Santos Blanco, M. Concepción (2021-11)
      Article
      Accés obert
      Microwave 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 

      Segura García, Daniel (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 

      Rueda Rodríguez, Luis Antonio (Universitat Politècnica de Catalunya, 2016-07-14)
      Treball Final de Grau
      Accés obert
      To 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 

      Bolzonello, Luca; Bernal Texca, Francisco Gumaro; Gerling Sarabia, Luis Guillermo; Ockova, Jana; Collini, Elisabetta; Martorell Pena, Jordi; van Hulst, Niek F. (2021-04-29)
      Article
      Accés obert
      The 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 ...
    • Photodiodes based on fullerene semiconductor 

      Voz Sánchez, Cristóbal; Puigdollers i González, Joaquim; Cheylan, Stephanie; Fonrodona, A; Stella, M; Andreu Batallé, Jordi; Alcubilla González, Ramón (2007-07)
      Article
      Accés restringit per política de l'editorial
      Fullerene thin films have been deposited by thermal evaporation on glass substrates at room temperature. A comprehensive optical characterization was performed, including low-level optical absorption measured by photothermal ...
    • Simulation of thermophotovoltaic devices based on c-Ge substrates 

      Shojaei Sola, David (Universitat Politècnica de Catalunya, 2023-02-02)
      Projecte Final de Màster Oficial
      Accés obert
      The 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 

      López Sánchez, Oriol (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 ...
    • Zero change CMOS microring modulators at 1550 nm: Modeling and characterization 

      Cea Falcó, Marc de (Universitat Politècnica de Catalunya, 2017-06)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Massachusetts Institute of Technology
      While 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 ...