Electrostatic Spray Deposition of Copper–Indium Thin Films
| Autor: | Kyunghoon Yoon, Young Min Ra, Hyun Yoon, Jihye Gwak, Sam S. Yoon, Ho Young Kim, Jae Ho Yun, SeJin Ahn, Scott C. James, Ji Hoon Woo |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Scanning electron microscope Analytical chemistry chemistry.chemical_element Substrate (electronics) engineering.material Pollution Electrostatic spray-assisted vapour deposition Taylor cone Coating Chemical engineering chemistry engineering Environmental Chemistry Deposition (phase transition) General Materials Science Thin film Indium |
| Zdroj: | Aerosol Science and Technology. 45:1448-1455 |
| ISSN: | 1521-7388 0278-6826 |
| Popis: | Electrostatic spray deposition is an innovative coating technique that produces fine, uniform, self-dispersive (due to Coulombic repulsion), and highly wettable, atomized droplets. Copper–indium salts are dissolved in an alcohol-based solvent; this precursor is then electrostatically sprayed onto a moderately heated, molybdenum-coated substrate. Precursor flowrates range from 0.02 to 5 mL/h under applied voltages of 1–18 kV, yielding droplet sizes around a few hundred nanometers. Comparing scanning electron microscope images of the coated samples showed that the substrate temperature, applied voltage, and precursor flowrate were the primary parameters controlling coating quality. Also, the most stable electrostatic spray mode that reliably produced uniform and fine droplets was the cone-jet mode with a Taylor cone issuing from the nozzle. |
| Databáze: | OpenAIRE |
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