Applied Science and Convergence Technology 2012; 21(4): 205-211
Published online July 1, 2012
Copyright © The Korean Vacuum Society.
Yeong Hwan Ko , Myung Sub Kim , Jae Su Yu
We investigated the optical and hydrophobic properties of the deposited silver (Ag) zinc oxide (ZnO) nanorods (NRs) on flexible indium tin oxide (ITO) coated polyethylene terephthalate (PET) substrates (i.e., ITO/PET). The ZnO NRs were grown by an electrochemical deposition using a sputtered ZnO seed layer and the Ag was deposited by using a thermal evaporator. For comparison, the same fabrication process was carried out on the bare ITO/PET without ZnO NRAs. Due to the discrete surface of ZnO NRs, the deposited Ag was formed as nano-scale particles, while the Ag became film-like for bare ITO/PET. In order to control the size and amount of Ag particles, the Ag deposition time was changed from 100 to 600 s. When the deposition time was increased, the Ag particles became larger and denser, and the absorptance was increased. This enhanced absorptance may be due to the localized surface plasmon resonance of Ag particles. Furthermore, the relatively high hydrophobicity was observed for the deposited Ag on the ZnO NRs/ITO/PET. These improved optical and surface properties are expected to be useful for flexible photovoltaic and optoelectronic devices.
Keywords: 은 입자,산화아연 나노로드,인듐주석산화막/폴리에틸렌 테레프탈레이트,국소표면플라즈몬공명,광 흡수율,소수성 표면,Ag particles,ZnO nanorods,Indiun tin oxide/polyethylene terephthalate,Localized surface plasmon resonance,Optical absorptance,Hydrophobicity