ZnO nanowire-based antireflective coatings with double-nanotextured surfaces
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- ZnO nanowire-based antireflective coatings with double-nanotextured surfaces
- Lee, Jae Won; Ye, Byeong Uk; Kim, Dong-yeong; Kim, Jong Kyu; Heo, Jong; Jeong, Hu Young; Kim, Myung Hwa; Choi, Won Jun; Baik, Jeong Min
- Issue Date
- AMER CHEMICAL SOC
- ACS APPLIED MATERIALS & INTERFACES, v.6, no.3, pp.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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