Microwave-assisted synthesis of indium tin oxide nanocrystals in polyol media and transparent, conductive layers thereof
| Autor: | Elin Hammarberg, Claus Feldmann, Anna Prodi-Schwab |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Thin layers Scanning electron microscope Metals and Alloys Analytical chemistry Surfaces and Interfaces Substrate (electronics) Tin oxide Evaporation (deposition) Surfaces Coatings and Films Electronic Optical and Magnetic Materials Indium tin oxide Scanning transmission electron microscopy Materials Chemistry Transparent conducting film |
| Zdroj: | Thin Solid Films. 516:7437-7442 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2008.02.048 |
| Popis: | Aiming at a facile and low-cost liquid phase synthesis of indium tin oxide (ITO), a microwave-assisted preparation in high-boiling, multidentate alcohols (so-called polyols) is evaluated. While heating for 2 h at 200 °C and ambient pressure, transparent ITO suspensions are obtained exhibiting a bright blue color. According to dynamic light scattering, scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Brunauer–Emmett–Teller analysis, as-prepared particles turn out to be single crystalline with an average diameter of 17 nm and a near monodisperse size distribution. Four-point probing of powder pellets reveals a low resistivity (1.1 × 10− 2 Ω cm) of as-prepared In2O3:Sn (5 mol.%). Fourier-transform infrared spectra show a reflectivity in the infrared close to 100%. As a proof of concept, thin layers are deposited on glass plates using a simple solvent evaporation technique. After a certain post-treatment, these layers exhibit a visible transmittance similar to the uncoated glass substrate and a low resistivity (1.2 × 10− 2 Ω cm). |
| Databáze: | OpenAIRE |
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