ITO Thin Film Coatings – Engineered at HHV Advanced Technologies

1. Indium–Tin–Oxide (ITO) has emerged as one of the most versatile materials in thin-film optics, combining high electrical conductivity with optical transparency in the visible spectrum. At HHV Advanced Technologies, the Thin Films and Optics Division (TFOD) has developed specialized expertise in ITO deposition for advanced optical and electronic applications, where both optical transmission and controlled resistivity are essential. Process Technology: The functional performance of ITO depends strongly on deposition quality, stoichiometry, and thickness control. Using two different processes E-Beam Evaporation and Magnetron Sputtering, TFOD achieves dense, defect-free ITO films with thickness accuracy better than ±1%. These established processes enhance film adhesion to substrates such as Borofloat, BK-7, fused silica, sapphire, Polycarbonate etc. Performance: ITO coatings produced at HHVAT can be tailored across a wide range of thicknesses (10–500 nm), enabling control of both transmission and sheet resistance. Typical coatings achieve optical transmission above 85% in the visible range, while sheet resistances can be tuned between 5 Ω/sq and 500 Ω/sq depending on application requirements. This balance between transparency and conductivity makes ITO uniquely suitable for multifunctional optical components, including transparent heaters, EMI-shielding windows, and electrodes for optoelectronic devices. Applications: The application landscape for TFOD’s ITO coatings is broad. In aerospace and defense, transparent conductive windows are deployed in vision systems and cockpit displays, where coatings must remain stable under volatile conditions such as vibration, thermal cycling, and humidity. In the medical and research sectors, ITO serves as an electrode material for biosensors and optically transparent devices. In energy and space technologies, it is applied to photovoltaic systems and satellite optics where long-term durability in vacuum and radiation environments is critical. Through its precision thin-film engineering, HHV Advanced Technologies demonstrates how ITO can be integrated into high-performance optical systems without compromising on either optical or electrical function. By combining advanced deposition methods with strict metrology and

2. environmental testing, TFOD delivers coatings that are not only reliable but also customizable for mission-critical applications across science, industry, and defense. For more information, visit the website: https://hhvadvancedtech.com/