Now showing items 1-14 of 14

  • Dendrimer light-emitting diodes 

    Stevenson, Stuart G. (University of St Andrews, 2008-11-28) - Thesis
    The electronics industry today is one that stands as a multi-billion dollar industry that is increasingly incorporating more and more products that have ever escalating applications in our everyday life. One of the main ...
  • The effect of intermolecular interactions and disorder on exciton diffusion in organic semiconductors 

    Haji Masri, Mohammad K. Z. (University of St Andrews, 2015-06-24) - Thesis
    This thesis presents studies of exciton diffusion in organic semiconductors measured using exciton-exciton annihilation and the measurements were performed on materials important for organic solar cells. In the conjugated ...
  • First charge-transfer complexes between tetrathiafulvalene and 1,2,5-chalcogenadiazole derivatives : design, synthesis, crystal structures, electronic and electrical properties 

    Pushkarevsky, Nikolay A.; Lonchakov, Anton V.; Semenov, Nikolay A.; Lork, Enno; Buravov, Lev I.; Konstantinova, Lidia S.; Silber, Georg T.; Robertson, Neil; Gritsan, Nina P.; Rakitin, Oleg A.; Woollins, J. Derek; Yagubskii, Eduard B.; Beckmann, Jens; Zibarev, Andrey V. (2012-12-31) - Journal article
    The first charge-transfer complexes of tetrathiafulvalene (1) with 1,2,5-chalcogenadiazole derivatives, i.e. with [1,2,5]thiadiazolo[3,4-c][1,2,5]thiadiazole (2) and 3,4-dicyano-1,2,5-telluradiazole (3), were designed, ...
  • Fluorescent red-emitting BODIPY oligofluorene star-shaped molecules as a color converter material for visible light communications 

    Sajjad, Muhammad T.; Manousiadis, Pavlos P.; Orofino, Clara; Cortizo-Lacalle, Diego; Kanibolotsky, Alexander L.; Rajbhandari, Sujan; Amarasinghe, Chiranthika Dimali Amarasinghe; Chun, Hyunchae; Faulkner, Grahame; O'Brien, Dominic C.; Skabara, Peter J.; Turnbull, Graham A.; Samuel, Ifor D. W. (2015-04) - Journal article
    Star-shaped organic semiconductors with boron dipyrromethene (BODIPY) cores are color-conversion materials for blue LED-based visible light communications. The difference between 0 and 1 bits is resolved in colour-converted ...
  • Low threshold organic semiconductor lasers and their application as explosive sensors 

    Wang, Yue (University of St Andrews, 2012-11-30) - Thesis
    This thesis presents studies of organic semiconductor lasers, including their operation when pumped by a light-emitting diode (LED), and their application as explosive sensors. The photophysics and amplified spontaneous ...
  • Material and device design for organic photovoltaics 

    Howells, Calvyn T. (University of St Andrews, 2015-06-24) - Thesis
    This thesis presents novel materials for photovoltaic conversion. The materials described are solution-processable organic semiconductors and have been used in the fabrication of organic photovoltaic cells (OPVs). The ...
  • Measurements of exciton diffusion in conjugated polymers 

    Shaw, Paul E. (University of St Andrews, 2009-11-30) - Thesis
    The exciton diffusion length, which is the distance an exciton can diffuse in its lifetime, is an important parameter that has a critical impact on the operation of many organic optoelectronic devices, including organic ...
  • Microresonators for organic semiconductor and fluidic lasers 

    Vasdekis, Andreas E. (University of St Andrews, 2007-07-16) - Thesis
    This thesis describes a number of studies of microstructured optical resonators, designed with the aim of enhancing the performance of organic semiconductor lasers and exploring potential applications. The methodology ...
  • One- and two-photon pumped organic semiconductor lasers 

    Tsiminis, Georgios (University of St Andrews, 2010) - Thesis
    This thesis describes a number of studies on organic semiconductors focused around using them as gain media for lasers. The photophysical properties of organic semiconductors are studied using a wide range of ...
  • Organic semiconductor lasers : compact hybrid light sources and development of applications 

    Yang, Ying (University of St Andrews, 2010-06) - Thesis
    This thesis describes a number of studies on organic semiconductors as laser gain media with the aim of simplifying the excitation scheme and exploring potential applications. A hybrid device taking the advantage of ...
  • Organic solar cells : Novel materials, charge transport and plasmonic studies 

    Ebenhoch, Bernd (University of St Andrews, 2015-11-30) - Thesis
    Organic solar cells have great potential for cost-effective and large area electricity production, but their applicability is limited by the relatively low efficiency. In this dissertation I report investigations of novel ...
  • Solution processable diketopyrrolopyrrole (DPP) cored small molecules with BODIPY end groups as novel donors for organic solar cells 

    Cortizo-Lacalle, Diego; Howells, Calvyn T.; Pandey, Upendra K.; Cameron, Joseph; Findlay, Neil J.; Inigo, Anto Regis; Tuttle, Tell; Skabara, Peter J.; Samuel, Ifor D. W. (2014-11-18) - Journal article
    Two novel triads based on a diketopyrrolopyrrole (DPP) central core and two 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) units attached by thiophene rings have been synthesised having high molar extinction coefficients. ...
  • Ultrafast organic lasers and solid-state amplifiers 

    Goossens, Mark (University of St Andrews, 2007-06-19) - Thesis
    This thesis presents an investigation of the lasing dynamics and optical amplification devices using conjugated polymers. Spectroscopic studies of conjugated polymers and dendrimers were also performed. Conjugated polymers ...
  • Visible light communication using a blue GaN mu LED and fluorescent polymer color converter 

    Chun, Hyunchae; Manousiadis, Pavlos; Rajbhandari, Sujan; Vithanage, Dimali A.; Faulkner, Grahame; Tsonev, Dobroslav; McKendry, Jonathan James Donald; Videv, Stefan; Xie, Enyuan; Gu, Erdan; Dawson, Martin D.; Haas, Harald; Turnbull, Graham A.; Samuel, Ifor D. W.; O'Brien, Dominic C. (2014-10-15) - Journal article
    This letter presents a novel technique to achieve high-speed visible light communication (VLC) using white light generated by a blue GaN mu LED and a yellow fluorescent copolymer. We generated white light suitable for room ...