Sökning: "Electroluminescence"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet Electroluminescence.

  1. 1. Characterization of as prepared and exposed Perovskitesolar cells by microscopic and spectroscopic techniques

    Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Nagaraju Gorella; [2021]
    Nyckelord :Perovskites; Solar Cell; SEM; AFM; c-AFM; Photoluminescence; Electroluminescence; Solar simulator.;

    Sammanfattning : Studying the microstructural features, optical, and electrical properties of the thin-filmperovskite solar cells (PSC) is the main objective of this thesis work. All the PSCs used in thisthesis work were prepared by spin coating assisted with gas quenching process and the samplesreceived from Interuniversity Microelectronics Centre (IMEC), Belgium. LÄS MER

  3. 2. Fabrication and characterisation of RGB LEDs based on nanowire technology

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Patrik Olausson; [2019]
    Nyckelord :RGB LEDs; InGaN; GaN; nitrides; platelets; nanotechnology; Technology and Engineering;

    Sammanfattning : The white light LEDs of today are usually based on a blue LED and a phosphor, converting the blue light to longer wavelengths. While these phosphor-converted LEDs are extremely efficient compared to incandescent light or fluorescent light, there is still plenty of room for improvement. LÄS MER

  4. 3. Creating nanopatterned polymer films for use in light-emitting electrochemical cells

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Thomas Moberg; [2018]
    Nyckelord :Thermal nanoimprint lithography; soft stamp; intermediate polymer stamp; Light-emitting electrochemical cell; LEC; Super Yellow; polystyrene; poly ethylene oxide ; nanopattern;

    Sammanfattning : Thermal nanoimprint lithography (T-NIL) is a cheap and fast technique to produce nanopatterns in polymeric materials. It creates these patterns by pressing a stamp down into a polymer film that has been heated above its glass transition temperature. LÄS MER

  5. 4. Utilizing an efficient color-conversion layer for realization of a white light-emitting electrochemical cell

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Joel Vedin; [2016]
    Nyckelord :Color-conversion layer; Light-emitting electrochemical cell; LEC; LECs; White light-emitting electrochemical cell; White light; R9; color-rendering index; CRI; High-color-rendering; color-conversion; top-emitting; Färgkonverteringslager; ljusemitterande electrokemisk cell; LEC; LECar; Vit ljusemitterande electrokemisk cell; vitt ljus; R9; färgåtergivningstal; CRI; färgkonvertering; topp-emitterande;

    Sammanfattning : Organic semiconducting materials have received a lot of attention in recent years and can now be found in many applications. One of the applications, the light emitting electrochemical cell (LEC) has emerged due to its flat and lightweight device structure, low operating voltage, and possibility to be fully solution processed. LÄS MER

  7. 5. Setup for Micro Photo- and Electro-Luminescence of Optoelectronic Device Structures

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Yuxuan Sun; [2015]
    Nyckelord :Photoluminescence; Photoluminescence setup; Electroluminescence; Optoelectronic device;

    Sammanfattning : Photoluminescence (PL) is an optical emission induced by photon absorption in a material where electrons are excited from the ground state to excited states, then relax to the lowest excited states and recombine radiatively. The PL emission provides vital information on bandgap energy, material purity and crystal quality. LÄS MER