Sökning: "photochromic"

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

  1. 1. Fabrication and characterizationof self-supporting Yttrium foils

    Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Julia Fejes; Sofia Reineck; [2022]
    Nyckelord :yttrium; thin foils; meis; yttrium oxyhydride; photochromic; erda;

    Sammanfattning : In this project self-supporting foils with focus on the element yttriumhave been fabricated by means of evaporation and magnetron sputtering.The goal was to see if it was possible to make photochromic selfsupportingyttrium foils. Multiple self-supporting foils were made andsome had suitable properties to be further investigated. LÄS MER

  3. 2. Correlating Photoconductivity with Photochromism in Oxygen-containing Rare-earth Metal Hydride Thin Films

    Master-uppsats, Uppsala universitet/Materialfysik

    Författare :Suraya Kazi; [2021]
    Nyckelord :Rare-earth metal hydride; Thin film synthesis; Thin film characterization; Optical properties; Electrical properties; Chemical composition; Photochromic materials; Photoconductivity;

    Sammanfattning : Scientists have recently discovered simultaneous photoconductivity and photochromism (i.e., optical switching upon light exposure) of oxygen-containing rare-earth metal hydrides (REMHO). A deep understanding of these extraordinary optical and electrical properties can open the door to advanced technological uses such as smart windows. LÄS MER

  4. 3. Electric Transport of Rare-earth Metal Oxy-hydride Thin Films

    L3-uppsats, Uppsala universitet/Materialfysik; Uppsala universitet/Tillämpad kärnfysik

    Författare :Suraya Kazi; [2021]
    Nyckelord :Photochromism; Photoconductivity; Rare-earth Metal Oxy-hydride; Electric Transport; Photodarkening; Yttrium Oxy-hydride;

    Sammanfattning : In this project, I investigate the photoconductivenature of photochromic rare-earth metal oxy hydrides (REMHO). Such materials have received increasingscientific attention since they show a color-neutralphotochromic effect that can be applied, e.g., in smartwindows or chromogenic devices. LÄS MER

  5. 4. A study of the photochromic effect in oxygen containing rare-earth metal hydride thin films and multilayer structures

    Master-uppsats, Uppsala universitet/Tillämpad kärnfysik

    Författare :Sigurbjörn Már Aðalsteinsson; [2020]
    Nyckelord :;

    Sammanfattning : In this work, we have studied the photochromic response of several oxygen containing rare-earth hydride thin films (REHO, RE = Y, Nd, Gd, and Dy). Their chemical composition was characterized by an iterative multi-method approach based on ion beams, while the photochromic effect was measured by means of optical spectrometry. LÄS MER

  7. 5. In-situ study of the chemical composition of photochromic Yttrium Oxy-Hydrides thin films

    L3-uppsats, Uppsala universitet/Tillämpad kärnfysik

    Författare :James Chen; [2019]
    Nyckelord :;

    Sammanfattning : .... LÄS MER