Indium tin oxide (ITO) thin films show a low sheet resistance and high transmittance in the visible range of the spectrum. Therefore, they play an important role as transparent electrodes for flat panel displays. However, their resistivity is rather high for use as a transparent electrode in large displays. One way to improve electrical and optical properties in large displays is to use ITO/Ag/ITO multilayer films. ITO/Ag/ITO multilayer films have lower sheet resistance than single layer ITO films with the same thickness. Prior to the ITO/Ag/ITO multilayer experiments, optimal condition for thickness change are necessary. Their thicknesses were deposited differently in order to analyze electrical and optical properties. However, when optimal single film characteristics are applied to ITO/Ag/ITO multilayer films, other phenomena appeared. After analyzing the electrical and optical properties by changing ITO and Ag film thickness, ITO/Ag/ITO multilayer films were optimized. By combining ITO film at 586 Å and Ag film at 10 nm, the ITO/Ag/ITO multilayer films showed optimized high optical transmittance of 87.65%, and the low sheet resistance of 5.5 Ω/sq.

Citations

• The Electrical, Optical, Heating Property and Electromagnetic Wave Shield Effect of TiO₂/Ag/TiO₂ Thin Films
  Jiho Kim, Yu-Sung Kim, Jin-Young Choi, Yeon-Hak Lee, Young-Min Kong, Daeil Kim
  Korean Journal of Metals and Materials.2024; 62(9): 735.     CrossRef

This paper describes the development of a piezoelectric flextensional transducer, which aims toeffectively degrade the TCE contained in aqueous solution. In order to adjust the 1st flextensionalresonant frequency and output displacement of the flextensional transducer, the effect of the geometricalvariations on performance was analyzed using the finite element analysis (FEM). The results indicatedthat the effect of external shell`s thickness and curvature were most significant, and experimentalfabrication and characterization of a transducer was performed to confirm the results. To prove the capacity to degrade the TCE contained in aqueous solution, 50 and 100 ppm of TCE were prepared in sealed chamber, and investigated the removal rate of TCE through the time and initial concentration.