Structural, electrical and optical studies on ruthenium doped ZnO pellets for device applications
| Autor: | Sujit Tewari, Ayon Bhattacharjee, Navnita Kumari, Arindam Ghosh |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Mechanical Engineering Doping Oxide chemistry.chemical_element Nanoparticle Nanotechnology Condensed Matter Physics Ruthenium Absorbance chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials General Materials Science Electrical measurements Crystallite Texture (crystalline) |
| Zdroj: | Materials Science and Engineering: B. 196:7-14 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/j.mseb.2015.02.012 |
| Popis: | Doped and undoped specimens of nano-particulate ZnO with 0.5 wt% and 1 wt% ruthenium were prepared through a chemical route. Structural characterization of the samples performed with XRD established that all the nanoparticles are of zinc oxide having polycrystalline nature. Morphological studies were conducted using FESEM to confirm the grain size and texture. Electrical measurements showed that the ac conductivity increases with frequency but decreases with increasing ruthenium concentration, making it a potential option for device applications. It is found that the absorbance does not significantly change with doping. The above fact is further confirmed from the bandgap calculations using the reflectance graphs. A decrease of bandgap from 3.42 to 3.19 eV with increasing Ru concentration is observed making it an important and advantageous material for potential visible light photocatalytic applications involving metal oxide nanostructures. |
| Databáze: | OpenAIRE |
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