Sökning: "Zinc Oxide ZnO"

Visar resultat 16 - 20 av 21 uppsatser innehållade orden Zinc Oxide ZnO.

  1. 16. Growth and Characterization of ZnO Nanostructures

    Master-uppsats, Institutionen för fysik, kemi och biologi

    Författare :Abdul Samad Syed; [2011]
    Nyckelord :PL photoluminescence ; Zinc Oxide ZnO ; optical properties; temperature dependent PL; Low temperature PL; Nanostructure; epitaxial film;

    Sammanfattning : A close relation between structural and optical properties of any semiconductor material does exist. An adequate knowledge and understanding of this relationship is necessary for fabrication of devices with desired optical properties. LÄS MER

  3. 17. Structural and electronic properties of bare and organosilane-functionalized ZnO nanopaticles

    Magister-uppsats, Institutionen för fysik, kemi och biologi

    Författare :Linda Angleby; [2010]
    Nyckelord :ZnO; nanoparticles; DFT; first principal calculations; electronic structure; lattice energy; band gap; adsorption; MPTMS; organosilane; functionalization; geometry optimization; molecular orbitals; adsorption energy; HOMO; LUMO.;

    Sammanfattning : A systematic study of trends in band gap and lattice energies for bare zinc oxide nanoparticles were performed by means of quantum chemical density functional theory (DFT) calculations and density of states (DOS) calculations. The geometry of the optimized structures and the appearance of their frontier orbitals were also studied. LÄS MER

  4. 18. Light emitting diodes based on n-type ZnO nanorods and p-type organic semiconductors

    Uppsats för yrkesexamina på grundnivå, Institutionen för teknik och naturvetenskap

    Författare :Raja Sellappan; [2008]
    Nyckelord :ZnO; ACG; organic; Inorganic; Polymer; nanorods;

    Sammanfattning : The aim of this thesis work was to fabricate a hybrid LED using organic-inorganic ZnO materials. The goal of the project was to get an efficient white light emission from zinc oxide (ZnO) nanorods active layer. LÄS MER

  5. 19. Growth of Zinc Oxide Nanoparticles on Top of Polymers and Organic Small Molecules as a Transparent Cathode in Tandem Photovoltaic Device

    Uppsats för yrkesexamina på grundnivå, Institutionen för teknik och naturvetenskap

    Författare :Mohamad Al Kadi Jazairli; [2008]
    Nyckelord :Organics; Polymers; Electronics; Solar Cell; Photovoltaics; Tandem; small molecules; zinc oxide; ZnO;

    Sammanfattning : Organic solar cells have caught considerable attention in the past few years due to their potential for providing environmentally safe, flexible, lightweight, inexpensive, and roll-to-roll feasible production solar cells. However, the efficiency achieved in current organic solar cells is quite low, yet quick and successive improvements render it as a promising alternative. LÄS MER

  7. 20. Organic-Inorganic Hetero Junction White Light Emitting Diode : N-type ZnO and P-type conjugated polymer

    Uppsats för yrkesexamina på grundnivå, Institutionen för teknik och naturvetenskap

    Författare :Shafeek Lubuna Beegum; [2008]
    Nyckelord :WLED; ZnO; Zinc Oxide; Organic; Inorganic; Conjucated Polymer; LED; ACG;

    Sammanfattning : The purpose of this thesis work is to design and fabricates organic-inorganic hetero junction White Light Emitting Diode (WLED). In this WLED, inorganic material is n- type ZnO and organic material is p-type conjugated polymer. LÄS MER