Study the Effect of Thickness on the Optical Properties of Copper Oxide Thin Films by FDTD Method
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Abstract
In this work, we present the optical modeling results of film thickness effect on the optical properties of CuO thin film based devices. The finite-difference time-domain (FDTD) method were used to predict the optical properties of CuO thin films on glass substrate with deferent thicknesses (100 nm- 3 µm). The absorption, transmittance, and reflectance are detected over a wavelength range of 300–800 nm. FDTD simulation results indicated that the optical absorption increased with increasing CuO film's thickness. In addition, a numerical simulation predicted that the CuO active layer with thickness 1.5 µm has a higher absorption spectrum. On the other hand, the further increase of CuO thickness (2, 2.5, and 3 µm) showed no more effect on the absorptance, where their absorption spectra behave similarly to each other. This study can be useful to develop highly efficient and low cost thin film based optoelectronic devices.
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