ZnO Nanowire-Based Antireflective Coatings with Double-Nanotextured Surfaces
- ZnO Nanowire-Based Antireflective Coatings with Double-Nanotextured Surfaces
- 이재원; 예병욱; 김동영; 김종규; 허종; 정후영; 김명화; 최원준; 백정민
- ZnO nanowire; antireflection; AR coating; core-shell; core-branch; MgO
- Issue Date
- ACS Applied Materials & Interfaces
- VOL 6, 1375-1379
- High-aspect-ratio nanotextured surfaces with different morphologies
(straight, core−shell type, and core−branch type nanowires) are prepared by
a hydrothermal method of ZnO nanowires, followed by means of RF sputtering
for core−shell type nanowires and e-beam evaporation for branch-type nanowires.
The structural analysis showed that the MgO has highly preferred orientation
along the ⟨111⟩ and ⟨200⟩ direction, respectively, and the crystalline continuity
between the ZnO and MgO layers were also showed. Compared with ZnO
nanowires, the MgO/ZnO samples drastically suppress broad and omnidirection
reflection, which ascribes to the refractive-index modulation along the lateral
direction of nanowires growth as well as the vertical direction. It was also shown
that morphology could have a substantial influence on the antireflection property.
These results suggest that double-nanotextured surface is one of the promising
structures for antireflective surfaces without fine control in nanowire morphology.
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