An epitaxial transparent conducting perovskite oxide: double-doped SrTiO3
| Autor: | Wolter Siemons, Arun Majumdar, Ramamoorthy Ramesh, Mark Huijben, Herman Heijmerikx, Jayakanth Ravichandran |
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| Přispěvatelé: | Inorganic Materials Science, Faculty of Science and Technology |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Photoluminescence business.industry General Chemical Engineering Doping Oxide General Chemistry Epitaxy Pulsed laser deposition chemistry.chemical_compound chemistry IR-75246 METIS-269429 Materials Chemistry Strontium titanate Optoelectronics business Sheet resistance Perovskite (structure) |
| Zdroj: | Chemistry of materials, 22(13), 3983-3987. American Chemical Society |
| ISSN: | 0897-4756 |
| Popis: | Epitaxial thin films of strontium titanate doped with different concentrations of lanthanum and oxygen vacancies were grown on LSAT substrates by pulsed laser deposition technique. Films grown with 5−15% La doping and a critical growth pressure of 1−10 mTorr showed high transparency (>70−95%) in the UV−visible range with a sheet resistance of 300−1000 Ω/. With the aid of UV−visible spectroscopy and photoluminescence, we establish the presence of oxygen vacancies and the possible band structure, which is crucial for the transparent conducting nature of these films. This demonstration will enable development of various epitaxial oxide heterostructures for both realizing opto-electronic devices and understanding their intrinsic optical properties |
| Databáze: | OpenAIRE |
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