Determination of optical constants of thin films and their role in solving of environmental problems

Subject Areas : Chemistry and Chemical Engineering of all specializations

Hassan Absalan ^{1 *}

1 - Department of Physics, Ah.C., Islamic Azad University, Ahar, Iran

Received: 2025-05-21 Accepted : 2025-06-14 Published : 2025-06-29

Keywords: thin films, optical constants, environment, Swanepoel,

Abstract :

In this article, the effect of optical constants on the properties of thin films is studied in order to apply these films in solving of environmental problems. The role of thin films in solving of various problems, including environmental ones, is of interest to most researchers. In recent years, the design and presentation of biosensors based on nanostructures including thin films has been able to significantly help humans reduce the potential risks of damage to the environment. Since thin film production technology, in addition to being useful, can also pose a threat to the environment, it is appropriate to consider issues related to maintaining safety and reducing its potential risks. The optical constants of thin film can enhance its quality and play a decisive role in the appropriate use of a film for industrial applications. There are different methods for determining the optical constants of a thin film. One of these methods is the method proposed by Swanepoel. In addition to estimating thickness, this method is used to calculate and estimate some optical parameters such as refractive index, extinction coefficient, optical band gap, imaginary and real parts of the dielectric constant, and optical conductivity of the samples.

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