Low temperature ZnO films grown by successive ionic layer adsorption and reaction method
| Autor: | P.P. Horley, J. Mata-Ramírez, E. Martínez-G., Raquel Garza-Hernández, M.R. Alfaro Cruz, Francisco S. Aguirre-Tostado |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Band gap Metals and Alloys Analytical chemistry Ionic bonding chemistry.chemical_element 02 engineering and technology Surfaces and Interfaces Zinc Thermal treatment 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Adsorption chemistry Materials Chemistry Transmittance 0210 nano-technology Ethylene glycol Layer (electronics) |
| Zdroj: | Thin Solid Films. 663:49-55 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2018.08.005 |
| Popis: | Zinc oxide films with a high transmittance in the visible range (over 80%) were obtained by successive ionic layer adsorption and reaction method without thermal treatment, using only a low-temperature (125 °C) ethylene glycol bath to complete the reaction. It was shown that the film deposition rate, as well as its structural and optical properties can be adjusted by variation of NH4OH concentration in the precursor solution. All obtained films were of a uniform surface morphology with fine grains about 43–48 nm in size and larger flower-like surface formations. The complex multi-technique material characterization has shown that ZnO deposited from 1:20 ZnSO4:NH4OH precursor solution featured low content of residual phases, faster growing rate, higher c-axis orientation, and the highest transparency. At the same time, optical band gap of the samples (Eg ≈ 3.4 eV) showed no marked dependence on NH4OH concentration. |
| Databáze: | OpenAIRE |
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