Electron beam deposited Nb-doped TiO2 toward nanostructured transparent conductive thin films
| Autor: | Nicole A. Beckers, M. D. Fleischauer, Michael J. Brett, Ryan T. Tucker |
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| Rok vydání: | 2012 |
| Předmět: |
Fabrication
Materials science business.industry Annealing (metallurgy) Evaporation Glancing angle deposition Nb-doped TiO2 Metals and Alloys Surfaces and Interfaces Sol–gel Electron beam physical vapor deposition Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystallinity Optics X-ray photoelectron spectroscopy Doped oxides Materials Chemistry Optoelectronics Transparent conducting oxides Thin film business Electrical conductor Sol-gel |
| Zdroj: | Thin Solid Films. 525:28-34 |
| ISSN: | 0040-6090 |
| Popis: | Nb-doped TiO2 (TNO) has been widely explored as an alternative transparent conductor. TNO thin films have been fabricated by various deposition methods, and here we demonstrate fabrication by evaporation of sol–gel synthesized TNO source material. A range of NbxTi1 − xO2 (x = 0, 0.03, 0.06, 0.12, 0.24) compositions were synthesized, pressed into pellets, and deposited as thin films via electron beam evaporation. The thin films were characterized for composition by energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy and for crystallinity by X-ray diffraction for the different Nb contents explored. Transparency, conductivity, and Haacke transparent conductor figure of merit values are reported for the evaporated TNO films as a function of Nb content, substrate heating temperature, and post deposition annealing conditions. Glancing angle deposition (GLAD) is used to demonstrate nanostructuring of evaporated TNO based on physical shadowing. Nanostructured GLAD TNO films of increased morphological complexity can be produced using this method, and could lead to unique transparent conductor device architectures. |
| Databáze: | OpenAIRE |
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