Sökning: "CdSe"

Visar resultat 6 - 10 av 25 avhandlingar innehållade ordet CdSe.

  1. 6. Fluorescence Properties of Quantum Dots and Their Utilization in Bioimaging

    Författare :Hao Xu; Ying Fu; Hjalmar Brismar; Marina Zelenina; Mattias Goksör; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fluorescence; Microscopy; Bioimaging; Nanomaterial; cytotoxicity; mechanism; Biological Physics; Biologisk fysik;

    Sammanfattning : Quantum dots (QDs), especially colloidal semiconductor QDs, possess properties including high quantum yields, narrow fluorescence spectra, broad absorption and excellent photostability, making them extremely powerful in bioimaging. In this thesis, we studied the fluorescence properties of QDs and attempted multiple ways to boost applications of QDs in bioimaging field. LÄS MER

  3. 7. New Catalytic Systems for Light-driven Hydrogen Evolution

    Författare :Chuanshuai Li; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; photocatalysis; hydrogen evolution; semiconductor; molecular catalyst; charge transfer; mechanism;

    Sammanfattning : Solar-driven reduction of water to produce hydrogen is one of the most promising ways to develop sustainable cleanenergy for the future. The challenge in photocatalytic hydrogen evolution research is to design inexpensive catalystsand construct efficient hydrogen production systems. LÄS MER

  4. 8. Ultrafast Photoinduced Processes in Core and Core–Shell Quantum Dots for Solar Cell Applications “Tiny Crystals for Big Applications”

    Författare :Mohamed Qenawy; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum dots; core–shell; electron injection; hole injection; hole trapping; exciton migration; solar cells; ultrafast dynamics; time-resolved spectroscopy.;

    Sammanfattning : The balance between our demands of energy and the energy we are consuming is not in equilibrium anymore. Therefore, the search for other energy resources is indispensable. Sustainable energy sources offer the alternative to the fossil fuels. LÄS MER

  5. 9. Strategies for Performance Improvement of Quantum Dot Sensitized Solar Cells

    Författare :Jing Huang; Hans Ågren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; quantum dot sensitized solar cells; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Sammanfattning : Quantum dot sensitized solar cells (QDSCs) constitute one of the most promising low-cost solutions that are explored for the world’s needs of clean and renewable energy. Efficient, low-toxic and stable QDSCs for large-scale applications have formed the subject for the solar cell research during recent years. LÄS MER

  7. 10. Semiconducting Polymer Nanofibers and Quantum Dot based Nanocomposites for Optoelectronic Applications

    Författare :Yichen Zhao; Muhammet S. Toprak; Abhilash Sugunan; Kishore Madhukar Paknikar; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fysik; Physics;

    Sammanfattning : Nanostructured materials have attracted a broad interest in various technologies such as optoelectronics. In this thesis, nanostructured semiconductor nanocrystals, including inorganic and organic materials, were fabricated by solution based methods. LÄS MER