X-ray reflectometry characterization of porous silicon films prepared by a glancing-angle deposition method

2009 ◽  
Vol 79 (12) ◽  
Author(s):  
S. Asgharizadeh ◽  
M. Sutton ◽  
K. Robbie ◽  
T. Brown
2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Zdenek Michalcik ◽  
Marta Horakova ◽  
Petr Spatenka ◽  
Sarka Klementova ◽  
Martin Zlamal ◽  
...  

The aim of this paper is to investigate the properties and photocatalytic activity of nanostructured TiO2layers. The glancing angle deposition method with DC sputtering at low temperature was applied for deposition of the layers with various columnar structures. The thin-film structure and surface morphology were analyzed by XRD, SEM, and AFM analyses. The photocatalytic activity of the films was determined by the rate constant of the decomposition of the Acid Orange 7. In dependence on the glancing angle deposition parameters, three types of columnar structures were obtained. The films feature anatase/rutile and/or amorphous structures depending on the film architecture and deposition method. All the films give the evidence of the photocatalytic activity, even those without proved anatase or rutile structure presence. The impact of columnar boundary in perspective of the photocatalytic activity of nanostructured TiO2layers was discussed as the possible factor supporting the photocatalytic activity.


2016 ◽  
Vol 675-676 ◽  
pp. 289-292 ◽  
Author(s):  
Theerayuth Plirdpring ◽  
Mati Horprathum ◽  
Pitak Eiamchai ◽  
Benjarong Samransuksamer ◽  
Chanunthorn Chananonnawathorn ◽  
...  

Nanostructure TiO2 films were prepared by electron beam evaporation with glancing angle deposition technique at room temperature. The morphology, crystal structure and optical properties at various substrate rotation speeds (0-10 rpm) were investigated by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and UV-vis spectrophotometer. The cross-section FE-SEM images illustrate that the nanostructures consist of different morphology: slanted columnar, spiral and vertical align nanorods at 0, 0.01 and 10 rpm-rotation speed, respectively. In particular, the rotation speed-controlled incoming vapor flux was found to play crucial role in the growth of nanostructure TiO2 films.


2015 ◽  
Vol 577 ◽  
pp. 128-133 ◽  
Author(s):  
Fatemeh Hosseini Siyanaki ◽  
Hamid Rezagholipour Dizaji ◽  
Mohammad Hossein Ehsani ◽  
Shiva Khorramabadi

2007 ◽  
Vol 515 (7-8) ◽  
pp. 3352-3355 ◽  
Author(s):  
Sumei Wang ◽  
Guodong Xia ◽  
Xiaoyong Fu ◽  
Hongbo He ◽  
Jianda Shao ◽  
...  

2002 ◽  
Vol 749 ◽  
Author(s):  
B. Djurfors ◽  
M.J. Brett ◽  
D.G. Ivey

ABSTRACTA preliminary TEM investigation of porous films fabricated by glancing angle deposition has shown the importance of surface diffusion and crystal structure in determining the final microstructure of the film. Although the process variables are extremely important in defining the morphology of the film, their effects are limited in terms of final microstructure.


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