Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8032964 | Thin Solid Films | 2018 | 5 Pages |
Abstract
Evolution of the band-gap and surface topography in Ba0.6Sr0.4TiO3 films fabricated on the anodic aluminum oxide templates with different pore diameters has been investigated by forming the nanostructure. Scanning electron microscope images show that the films tend to grow along the edge of the pores of templates. The optical band-gap of films is broadened from 3.25 to 4.20â¯eV with the pore diameters decreasing from 400 to 30â¯nm. Meanwhile, the optical band-gap of films on templates with the 30â¯nm pore diameter is nearly independent on the deposition time. These results are attributed to the quantum size effect and the specific structure of films. Our experimental work provides a further understanding of the modulated optical properties of oxides by controlling the diameter of templates.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Hong Yan, Junyuan Wang, Bing Yang, Shuanhu Wang, Hui Xing, Kexin Jin,