Monochromatic Photochemical Deposition and Characterization of ZnSe Thin Films

Abstract

Zinc selenide (ZnSe) as an II-IV group has attracted attention as a binary semiconductor material due to its superior chemically stability than other semiconducting materials such as zinc sulphide (ZnS). In this work, ZnSe thin film was synthesized using a simple, clean and relatively inexpensive monochromatic photochemical synthesis method at room temperature. The structure of the ZnSe films deposited under different coloured illumination was confirmed by X-ray diffraction and the effect of the monochromatic light on the growth rate was observed. The scanning electron microscopy (SEM) result was demonstrated different morphology of the different films' surfaces, such as granular spherical, cauliflower, fiber, or wire, with a variety of porosity that was achieved by a simpler photochemical route. A change in the optical bandgap between 2.72 eV and 2.82 eV is observed for the red, green, blue, white light, and darkness conditions. And it is further reduced for samples annealed in the air for 2 hours at 100 °C, and 200 °C indicates improved crystallinity. The obtained result suggests that synthesized material can be used for photoelectrochemical solar cells.

Comparative Study of TiO2, ZnO, and Nb2O5 Photoanodes for Nitro-Substituted Naphthoquinone Photosensitizer-Based Solar Cells

“…Still, it would be interesting to find cheaper alternatives due to the high cost of these complex technologies and expensive methods. Solar cells made of crystalline silicon are more costly and have a limited application. , Perovskite, , quantum-dot, and dye-sensitized solar cells are examples of third-generation solar cell technology that has met the requirement of a low-cost, straightforward fabrication process. − Over the past few years, dye-sensitized solar cells (DSSCs) have emerged as promising third-generation solar cell technology. , DSSCs make use of photovoltaic energy, making use of nontoxic and environment-friendly materials . DSSCs have generated a lot of research attention because of their simple manufacturing process, low cost, ease of scaling up, nontoxicity, lighter weight, and potential usage of the flexible substrate with transparent and colorful nature …”

“… 17 , 18 Perovskite, 19 , 20 quantum-dot, 21 and dye 22 -sensitized solar cells are examples of third-generation solar cell technology that has met the requirement of a low-cost, straightforward fabrication process. 23 − 26 Over the past few years, dye-sensitized solar cells (DSSCs) have emerged as promising third-generation solar cell technology. 27 , 28 DSSCs make use of photovoltaic energy, making use of nontoxic and environment-friendly materials.…”