Analysis of scattering mechanisms in zinc oxide films grown by the atomic layer deposition technique
In this work, the analysis of the temperature-dependent electrical conductivity of highly crystalline zinc oxide (ZnO) thin films obtained by the Atomic Layer Deposition (ALD) method is performed. It is deduced that the most important scattering mechanisms are: scattering by ionized defects (at low...
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| Veröffentlicht in: | Journal of applied physics 2015-07, Vol.118 (3) |
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| container_title | Journal of applied physics |
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| creator | Krajewski, Tomasz A. Dybko, Krzysztof Luka, Grzegorz Wachnicki, Lukasz Kopalko, Krzysztof Paszkowicz, Wojciech Godlewski, Marek Guziewicz, Elzbieta |
| description | In this work, the analysis of the temperature-dependent electrical conductivity of highly crystalline zinc oxide (ZnO) thin films obtained by the Atomic Layer Deposition (ALD) method is performed. It is deduced that the most important scattering mechanisms are: scattering by ionized defects (at low temperatures) as well as by phonons (mainly optical ones) at higher temperatures. Nevertheless, the role of grain boundaries in the carrier mobility limitation ought to be included as well. These conclusions are based on theoretical analysis and temperature-dependent Hall mobility measurements. The presented results prove that existing models can explain the mobility behavior in the ALD-ZnO films, being helpful for understanding their transport properties, which are strongly related both to the crystalline quality of deposited ZnO material and defects in its lattice. |
| doi_str_mv | 10.1063/1.4927294 |
| format | Article |
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It is deduced that the most important scattering mechanisms are: scattering by ionized defects (at low temperatures) as well as by phonons (mainly optical ones) at higher temperatures. Nevertheless, the role of grain boundaries in the carrier mobility limitation ought to be included as well. These conclusions are based on theoretical analysis and temperature-dependent Hall mobility measurements. 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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | CARRIER MOBILITY CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DEPOSITION ELECTRIC CONDUCTIVITY GRAIN BOUNDARIES LAYERS PHONONS SCATTERING TEMPERATURE DEPENDENCE THIN FILMS ZINC OXIDES |
| title | Analysis of scattering mechanisms in zinc oxide films grown by the atomic layer deposition technique |
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