Sökning: "wide band gap oxides"

Visar resultat 6 - 10 av 11 avhandlingar innehållade orden wide band gap oxides.

1. 6. Phthalocyanine interfaces : the monolayer region

   Författare :Pål Palmgren; Mats Göthelid; Mats Fahlman; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phthalocyanine; III-V semiconductor; transition metal oxides; adsorption; self-assembly; Material physics with surface physics; Materialfysik med ytfysik;

   Sammanfattning : Organic molecules adsorbed on inorganic substrates are the topics of interest in this thesis. Interfaces of this kind are found in dye sensitized solar cells that convert solar energy to electricity, a promising environmentally friendly energy source which might provide a route to replace fossil fuels. LÄS MER

3. 7. The synthesis, characterization and device fabrication of ZnO, NiO and their composite nanostructures

   Författare :Mazhar Ali Abbasi; Magnus Willander; Maxim Ryzhii; Linköpings universitet; []
   Nyckelord :Zinc oxide; Nickel Oxide; Composite nanostructures; Wide band gap; Low temperature growth; Luminescence; Photo-detector; Light emitting diode;

   Sammanfattning : Electronics industry has been revolutionized since last few decades because of the fabrication of electronic devices by using nanoscale based materials. But the more innovative feature in the electronic devices is the use of transparent materials, which makes the transparent electronic devices as one of the most interesting research field in nanoscience and nano-technology now a days. LÄS MER

4. 8. Device Fabrication and Photosensitizing Role of ZnO Nanostructures in Photodynamic Therapy of Cancer

   Författare :Kishwar Sultana; Magnus Willander; Omer Nour; Arne Rosén; Linköpings universitet; []
   Nyckelord :Zinc oxide nanostructures; light emitting diodes; reactive oxygen species; photosensitizer; cancer cell; photodynamic therapy; NATURAL SCIENCES; NATURVETENSKAP;

   Sammanfattning : In nanoscience and nanotechnology, zinc oxide (ZnO) is gaining much research attention due to direct wide band gap (3.3 eV), large exciton binding energy (60 meV), and deep level defects emissions that cover the whole visible range. LÄS MER

5. 9. Semiconductor Nanowires: Characterization and surface modification

   Författare :Sofie Yngman; NanoLund: Centre for Nanoscience; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; semiconducting nanowire; atomic force microscopy; Scanning tunneling microscopy; X-ray Photoelectron Spectroscopy; Scanning Probe Microscopy; Nanowires; Sveptunnelmikroskopi; Atomkraftsmikroskopi; XPS; Halvledarfysik; nanotrådar;

   Sammanfattning : The topic of III-V nanowires is still, after more than two decades, a growing and lively research area. The areas of application are wide and contain such important topics as energy harvesting, cheap and efficient lighting, high efficiency detectors and new types of electronics. III-V materials offer properties superior to the widely used Si. LÄS MER

7. 10. Nanostructured Metal Oxide Semiconductors for Functional Applications

   Författare :Anton Landström; Isabella Concina; Alberto Vomiero; Caterina Soldano; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Experimentell fysik; Experimental Physics;

   Sammanfattning : This thesis is about nanostructured metal oxides, their properties, and some of their applications. Semiconducting metal oxides like TiO2, ZnO,and SnO2 have a wide band gap, which means they absorb UV light andgenerate electron-hole pairs. LÄS MER