Abstract
In this study, the effect of silicone coatings on optical properties and durability performances of amorphous ln2O3:Zn (IZO) transparent conductive films is investigated. The average transmittance in visible wavelength of the IZO films increases from 77.5% to 84.3% by preparing silicone coatings on the surface, corresponding that the Haccke’s figure of merit (FOM) increases from 6.4 × 10−3 Ω−1 to 1.47 × 10−2 Ω−1. The reason is that the silicone coatings with low refractive index is considered as an antireflective layer. Both simulation and experiments demonstrate that the average transmittance is independent on silicone coatings thickness while the silicone coatings thickness is above 1.0 μm. After exposing in a damp-heat test at 60 °C and 95% relative humidity for 28 days, the sheet resistance and microscopic images of the IZO films with silicone coatings at different thickness are nearly no variation, indicating an excellent durability performance. While the sheet resistance of the IZO films without silicone coatings increases slightly and the corrosion on the surface is observed visually. It is concluded that the water vapor is the key reason for the degradation of the IZO films by investigating the microscopic images of the IZO films after exposing in the different environments.
Published Version
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