In this research, the effects of initial concentrations on the optical properties of Cadmium Selenide nanostructured thin layers synthesized by the chemical solution deposition method have been investigated. Experimental data showed that the initial concentration controlling during deposition has a remarkable role in the optical band gap energy and thin film configuration. It was found that thin film thicknesses increase with increasing of the initial concentrations so a sample with higher initial concentration degrades the dye pollutant in more effective in comparison with a sample of the low initial concentration. The methylene blue and condo red were used as a pollutant to estimate the photocatalytic action of the sample. The optical band gap for deposited thin films decreased from 3.52 eV to 1.86 eV also Urbach energy, equal to the values of the tail of localized states increase from 0.176 to 0.9 eV with increasing of the initial concentration.

在这项研究中，研究了初始浓度对化学溶液沉积法合成硒化镉纳米结构薄层的光学性能的影响。实验数据表明，沉积过程中的初始浓度控制在光学带隙能量和薄膜结构方面具有显著作用。已经发现，薄膜厚度随着初始浓度的增加而增加，因此与低初始浓度的样品相比，具有较高初始浓度的样品使染料污染物更有效地降解。亚甲基蓝和公寓红用作污染物，以评估样品的光催化作用。沉积的薄膜的光学带隙也从Urbach能量从3.52 eV降低到1.86 eV，