Search for dissertations about: "light-emitting"

Showing result 1 - 5 of 133 swedish dissertations containing the word light-emitting.

  1. 1. Functional and Flexible Light-Emitting Electrochemical Cells

    University dissertation from Umeå : Umeå University

    Author : Amir Asadpoordarvish; Ludvig Edman; Jun Gao; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; all-ambient fabrication; ambient-air lifetime; encapsulation; flexible; light-emitting electrochemical cells; light-emitting paper; fysik; Physics;

    Abstract : The introduction of artificial illumination has brought extensive benefits to mankind, and during the last years we have seen a tremendous progress in this field with the introduction of the energy-efficient light-emitting diode (LED) and the high-contrast organic LED display. These high-end technologies are, however, produced using costly and complex processes, and it is anticipated that the next big thing in the field will be the advent of a low-cost and “green” illumination technology, which can be fabricated in a cost- and material-efficient manner using non-toxic and abundant raw materials, and which features attractive form factors such as flexibility, robustness and light-weight. READ MORE

  2. 2. Light-Emitting Electrochemical Transistors

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Jiang Liu; Magnus Berggren; Isak Engquist; Qibing Pei; [2014]

    Abstract : Since the discovery of conductive polymers in 1977, the implementation of organic conjugated materials in electronic applications has been of great interest in both industry and academia. The goal of organic electronics is to realize large-area, inexpensive and mechanically-flexible electronic applications. READ MORE

  3. 3. Polymer light-emitting electrochemical cells Utilizing doping for generation of light

    University dissertation from Umeå : Department of Physics, Umeå University

    Author : Piotr Matyba; Ludvig Edman; Qibing Pei; [2011]
    Keywords : ;

    Abstract :     The current implementation of conjugated polymers (“conducting plastics”) in a wide range of devices promises to bring the vision of a new generation of flexible, efficient and low-cost applications to reality. Plastic lightemitting devices in the form of polymer light-emitting diodes (PLEDs) are projected to be particularly close to the market in applications such as large area and conformable illumination panels and high-performance thin displays. READ MORE

  4. 4. Design and Fabrication of Light-Emitting Electrochemical Cells

    University dissertation from Umeå : Umeå universitet

    Author : Andreas Sandström; Ludvig Edman; Ronald Österbacka; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Light-emitting electrochemical cell; fabrication; organic semiconductors; organic electronics; ambient fabrication; roll-to-roll; fysik; Physics;

    Abstract : Glödlampan, en gång symbolen för mänsklig uppfinningsförmåga, är idag på väg att försvinna. Lysdioder och lågenergilampor har istället tagit över då dessa har betydligt längre livstid och högre effektivitet. READ MORE

  5. 5. Light for a brighter morrow paving the way for sustainable light-emitting devices

    University dissertation from Umeå : Umeå universitet

    Author : Petter Lundberg; Ludvig Edman; Thomas Wågberg; Magnus Jonsson; [2020]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Artificial Light; Organic Electronics; Photophysics; Light-emitting Electrochemical Cells; Thermally Activated Delayed Fluorescence; Host-Guest; Sustainability; Solution Processing; fysik; Physics;

    Abstract : We live in an artificially lit world, where light enhances our productivity and improves our quality of life. Today our appetite for light is stronger than ever, and emerging light-emitting technologies do not just replace the classical incandescent light bulb, they also open up for a new world of applications. READ MORE