Preparation of a sol-gel doped zinc oxide, copper, iron, nickel, zinc film and investigate the effect of dopant on the zinc oxide thin film
| Autor: | Jaine-Huai Huang, 黃建槐 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 A sol-gel method was used to fabricate several ZnO alloying thin films on the SS41 iron substrate, in which the iron substrate was pretreated at 500oC for 15 min in air before coating. As to these alloying oxides like CuyO, NiO, FeOy, and ZnO, their chemical precursors were nitrates, and there compositions were ranged from 0.1-10.0 mol%. Through different oxide alloying, and sintering atmosphere plus temperature, physical properties of sintered specimens including microstructures, crystal structures, and electrical properties were determined. In the ZnO- CuyO system, a second phase CuO was observed in the 10mol% and 3 mol% CuyO sintered specimens. All sintered ZnO alloying thin films contained inter-connected and porous structures with a thickness of 1m approximately. For sintered bulk specimens, the specimen with 1mol% CuyO showed an apparent grain growth phenomenon. Except for microstructures, a second phase Fe3O4 was observed in the bulk sintered specimen with 3 mol% FeOy in the ZnO-FeOy system form the corresponding X-ray diffraction patterns. As to the electrical properties being measured by an LCR meter, the electrical resistances of these sintered ZnO alloying specimens were increasing with the measuring frequency from 30Hz to 500kHz. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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