scholarly journals Controlling anodization time to monitor film thickness, phase composition and crystal orientation during anodic growth of TiO2 nanotubes

2022 ◽  
Vol 134 ◽  
pp. 107168
Author(s):  
Xuelan Hou ◽  
Peter D. Lund ◽  
Yongdan Li
Keyword(s):  
Phase Composition ◽  
Film Thickness ◽  
Crystal Orientation ◽  
Tio2 Nanotubes ◽  
Anodization Time

Simulation of Metallization Formation Processes on Si

1990 ◽  
Vol 181 ◽  
Author(s):  
V. V. Tokarev ◽  
A. N. Likholet ◽  
B. N. Zon
Keyword(s):  
Thin Films ◽  
Phase Composition ◽  
Film Thickness ◽  
Atomic Composition ◽  
Formation Processes ◽  
Silicide Formation ◽  
Electric Resistance ◽  
Precise Control ◽  
Atomic Distribution ◽  
Analytical Measurements

The processes occuring in thin films, in particular such as silicide formation processes, are rather difficult to control using analytical measurements. Such processes are widely used for the formation of metallization layers and usually require the precise control of film thickness, atomic composition, atomic distribution profiles, phase composition and electric resistance 1. The absence of model concepts of the process of silicide formation hinders the wide use of such processes and makes them labour-consuming ones due to the large number of control measurements.

Effect of Film Thickness and Crystal Orientation on the Constituent Phase in Epitaxial BiFeO3–BiCoO3Films Grown on SrTiO3Substrates

2010 ◽  
Vol 49 (9) ◽  
pp. 09MB04 ◽  
Author(s):  
Shintaro Yasui ◽  
Keisuke Yazawa ◽  
Tomoaki Yamada ◽  
Ken Nishida ◽  
Hiroshi Uchida ◽  
...  
Keyword(s):  
Film Thickness ◽  
Crystal Orientation ◽  
Constituent Phase

The Fabrication of Highly Ordered TiO2 Nanotube Arrays and their Application in Dye-Sensitized Solar Cells

2011 ◽  
Vol 217-218 ◽  
pp. 1553-1558 ◽  
Author(s):  
Hong Mei Xu ◽  
Yong Liu ◽  
Hai Wang ◽  
Wen Xia Zhao ◽  
Hong Huang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Tio2 Nanotubes ◽  
Dye Sensitized Solar Cells ◽  
Tube Length ◽  
Nanotube Arrays ◽  
Anodization Voltage ◽  
Dye Sensitized ◽  
Anodization Time ◽  
Inner Diameter ◽  
Sensitized Solar Cells

Highly ordered closely packed TiO2 nanotubes were successfully fabricated by anodization of Ti foils in ethylene glycol-based electrolytes. For an identified electrolyte, the dependence manner of the nanotube dimension to the anodization parameters, including anodization voltage and time were systematically investigated. The inner diameter depends linearly on the anodization voltage but is time independent. The morphology of the tube is relative to the anodization voltage. The tube length is closely relative to the anodization time. Keeping the anodization voltage, the length will increase with the time rising to an extent and then maintain a relatively steady value. Longer nanotubes will be obtained when the anodization voltage is higher for a determined time. TiO2 nanotube-based dye-sensitized solar cells (DSSCs) were fabricated. The results showed that the conversion efficiency was related to the tube dimension. The optimum efficiency of 4.25% is obtained.

Study on Lamellar Crystal Orientation and Instable Growth in Polymer Ultrathin Films

2012 ◽  
Vol 482-484 ◽  
pp. 1000-1003
Author(s):  
Yi Jin Ren
Keyword(s):  
Film Thickness ◽  
Ultrathin Films ◽  
Crystal Orientation ◽  
Growth Front ◽  
Polymer Substrate ◽  
Controlled Growth ◽  
Lamellar Crystal ◽  
Diffusion Controlled ◽  
Lamellar Crystals

The lamellar crystal orientation and crystal instable growth in polymer ultrathin films were studied. The orientation of lamellar crystal transforms from edge-on to flat-on with decreasing film thickness due to the enhancement of restriction effect of polymer-substrate on the edge-on lamellar crystals. Lamellar crystals in ultrathin films have a instable growth and become a dendrite at the growth front because of the diffusion-controlled growth.

scholarly journals Preparation of TiO2 Nanotube Array on the Pure Titanium Surface by Anodization Method and Its Hydrophilicity

Scanning ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Jianguo Lin ◽  
Wenhao Cai ◽  
Qing Peng ◽  
Fanbin Meng ◽  
Dechuang Zhang
Keyword(s):  
Applied Voltage ◽  
Tio2 Nanotubes ◽  
Pure Titanium ◽  
Angle Measurement ◽  
Anatase Tio2 ◽  
Tio2 Nanotube ◽  
Tio2 Nanotube Array ◽  
Water Contact ◽  
Nanotube Array ◽  
Anodization Time

In this work, a highly ordered TiO2 nanotube array on pure titanium (Ti) was prepared by anodization. The effects of the applied voltage and anodization time on the microstructure of the TiO2 nanotube arrays were investigated, and their hydrophilicity was evaluated by the water contact angle measurement. It was found that a highly ordered array of TiO2 nanotubes can be formed on the surface of pure Ti by anodized under the applied voltage of 20 V and the anodization time in the range of 6-12 h, and the nanotube diameter and length can be regulated by anodization time. The as-prepared TiO2 nanotubes were in an amorphous structure. After annealing at 550°C for 3 h, the amorphous TiO2 can be transformed to the anatase TiO2 through crystallization. The anatase TiO2 array exhibited a greatly improved hydrophilicity, depending on the order degree of the array and the diameter of the nanotubes. The sample anodized at 20 V for 12 h and then annealed at 550°C for 3 h exhibited a superhydrophilicity due to its highly ordered anatase TiO2 nanotube array with a tube diameter of 103.5 nm.

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