Sökning: "Photo luminescence"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Photo luminescence.

  1. 1. Photo-physical properties of up-converting NaYF4:Yb-Er,Yb-Mn nanocrystals

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Hongjian Wu; [2022]
    Nyckelord :Appled Physics; Tillämpad fysik;

    Sammanfattning : Rare earth-doped upconversion nanoparticles can emit light with various wavelength from ultraviolet to infrared when excited by near-infrared light. The superior properties including long luminescence lifetime, narrow emission spectra, low toxicity and high chemical stability makes it a promising optical material in bioimaging and other applications. LÄS MER

  3. 2. Detection of Amphetamine with Graphene Quantum Dots

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Carl Fredrik Åslund; [2021]
    Nyckelord :Graphene quantum Dots; Amphetamine; Sensor; GQD; Grafen kvantprickar; Amfetamin; Sensor; GQD;

    Sammanfattning : Amphetamine abuse is an enduring problem in many developed nations, including Sweden. It causes lasting damage both to its users and in the form of increased strain on healthcare services. It is therefore critical that police be equipped with the tools necessary to rapidly and accurately identify any samples in order to combat this scourge. LÄS MER

  4. 3. Optical Study of Micro-Resonators with G-centers as an Active Medium

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Baptiste Lefaucher; [2021]
    Nyckelord :G-center; Silicon Photonics; Micro-Resonators Optics; Laser; Photo-Luminescence Spectroscopy; G-center; Kiselfotonik; Mikroresonatoroptik; Laser; Fotoluminescensspektroskopi;

    Sammanfattning : The G-center has recently been identified as the first deterministic single-photon punctual emitter isolated in silicon. This discovery is of great interest for largescale quantum technologies, due to the abilities of silicon in terms of integration and scalability. LÄS MER

  5. 4. Correlated Structure-Property Investigation of Ultrathin InAs Nanowires

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

    Författare :Linnea Suomenniemi; [2019]
    Nyckelord :Nanowires; InAs; epitaxy; MBE; Photo luminescence; Physics and Astronomy;

    Sammanfattning : III-V semiconductors are a profound part of the optoelectronics industry and new developments in alloy compositions and architectures are constantly emerging. Lowdimensional semiconductors, such as nanowires (NWs) have shown to have improved characteristics in certain areas such as enhanced light absorption and can furthermore be integrated on Silicon (Si) plattforms and are thus predicted to be a key component in future nanoelectronic and nanophotonic applications and devices. LÄS MER

  7. 5. Modification of a transient EPR and photoluminescence detection setup

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Olof Grund; [2017]
    Nyckelord :EPR; photo luminescence; FSC2;

    Sammanfattning : Climate change has given rise to higher demand of renewable energy. Conventional non-organic solar cells are still seen the most on the market but the last 10-20 years there has been an exponential increase in research about organic solar cells. LÄS MER