Search for dissertations about: "light-emitting"

Showing result 21 - 25 of 182 swedish dissertations containing the word light-emitting.

  2. 21. Defects and crystallinity control of perovskite films for light-emitting diodes

    Author : Zhongcheng Yuan; Olle Inganäs; Feng Gao; David Ginger; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Metal halide perovskites are promising materials for the fabrication of cost-effective and highperformance light-emitting diodes (LEDs), due to their solution processability, high photoluminescence quantum efficiencies (PLQEs) and excellent charge transport properties. Importantly, perovskite LEDs show ultra-pure emission color, which is better than that of the state-of-the-art quantum dot LEDs (QLEDs) and organic LEDs (OLEDs), demonstrating a bright application potential for realizing vivid natural colors display in the future. READ MORE

  4. 22. Theoretical modeling of bipolar double-barrier resonant-tunneling light emitting diodes

    Author : Anders Kindlihagen; Linköpings universitet; []
    Keywords : ;

    Abstract : This thesis is about firms determined to gain competitive advantages from environmental demands, about the efforts of engineers employed with the challenge of fulfilling environmental performance targets and about the management and organisation of product development. It is about incremental change, built on established technological knowledge, as well as about radical technological change. READ MORE

  5. 23. Photoelectron spectroscopy of conjugated polymer surfaces and interfaces for light emitting devices

    Author : Grzegorz Greczynski; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  6. 24. Optical properties and degradation of deep ultraviolet AIGaN-based light-emitting diodes

    Author : Andrea Pinos; Saulius Marcinkevicius; Andreas Hangleiter; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; AIGaN; deep-UV LEDs; polarization fields; screening; exciton binding energy; alloy fluctuations; near-field microscopy; carrier dynamics; LED aging; Optics; Optik;

    Abstract : .... READ MORE

  7. 25. Studies of Light Emitting Devices Based on Er-doped Si and SiGe Layered Structures

    Author : Chun-Xia Du; Fransesco Priolo; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; electroluminescence; diode; transistor; hot electron; recombination; excitation; de-excitation; Auger effect; molecular beam epitaxy; Er; Si; SiGe;

    Abstract : Doping with rare earth element erbium (Er) in Si has recently attracted a lot of research interest due to potential applications in Si-based opto-electronics. By using molecular beam epitaxy (MBE), precipitate-free Er-doping in Si has been made together with other co-dopants, e.g., oxygen (0) and fluorine (F), up to a level ∼1020 cm-3. READ MORE