Highly Textured Seed Layers for the Growth of Vertically Oriented ZnO Nanorods

0499951 - ÚFE 2020 RIV CH eng J - Journal Article
Bašinová, Nikola - Černohorský, Ondřej - Grym, Jan - Kučerová, Šárka - Faitová, Hana - Yatskiv, Roman - Vaniš, Jan - Veselý, J. - Maixner, J.
Highly Textured Seed Layers for the Growth of Vertically Oriented ZnO Nanorods.
Crystals. Roč. 9, č. 11 (2019), č. článku 566. ISSN 2073-4352. E-ISSN 2073-4352
R&D Projects: GA ČR(CZ) GA17-00355S
Institutional support: RVO:67985882
Keywords : Annealing * Nanorods * Preheating * Seed layer * Zinc oxide * Sol-gel
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.404, year: 2019
Method of publishing: Open access
https://www.mdpi.com/2073-4352/9/11/566

One dimensional ZnO nanostructures prepared by favorable and simple solution growth methods are at the forefront of this research. Vertically oriented ZnO nanorods with uniform physical properties require high-quality seed layers with a narrow size distribution of the crystallites, strong c-axis orientation, and low surface roughness and porosity. It has been shown that high quality seed layers can be prepared by the sol-gel process. The sol-gel process involves three essential steps: preparation of the sol, its deposition by dip coating, and thermal treatment comprising preheating and annealing. We put emphasis on the investigation of the heat treatment on the properties of the seed layers and on the vertical alignment of the nanorods. It was demonstrated that for the vertical alignment of the nanorods, the preheating step is crucial and that the temperatures reported in the literature have been too low. With higher preheating temperatures, conditions for the vertical alignment of the nanorods were achieved in both investigated annealing atmospheres in air and in argon
Permanent Link: http://hdl.handle.net/11104/0292134