Preparation of Zinc Sulfide and Magnesium Fluoride films by ion beam assisted deposition technology

Conventional vacuum evaporation of Zinc Sulfide and Magnesium Fluoride soft films have good visible light transmittance and infrared reflectance, and the process is simple, the cost is low, so it has been widely used in cold light lamps and other products. However, the soft films of Zinc Sulfide and Magnesium Fluoride prepared by conventional vacuum evaporation techniques tend to be gradually replaced by hard films of Titanium Dioxide and Silicon Dioxide due to poor firmness, moisture resistance and stability. Zinc Sulfide and Magnesium Fluoride films with good firmness, moisture resistance and stability can be obtained by applying ion beam assisted deposition technology, so that this luminescent film has good application value.

The optical properties of the film are not only related to the design of the film system, the composition of the film and the matrix, the error of the film thickness monitoring, but also related to the structure, impurity and defect of the film. The less the film absorbs light, the higher the infrared light transmittance and visible light reflectance are generally. The cold light film with IBAD technology has good optical properties under the correct design and technological conditions.