A New Approach in Chemical Bath Deposition of Cadmium Selenium Thin Films

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Physica Status Solidi A-applications and Materials Science Pub Date : 2024-09-04 DOI:10.1002/pssa.202400268

Metehan Önal, Barış Altiokka

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Abstract

This study aims to produce cadmium selenium (CdSe) thin films with a hexagonal structure using the chemical bath deposition (CBD) method. In this study, 0.075 g of cadmium chloride (CdCl2) is used as a Cd source, 0.06 g of etilendiamin tetra acetic acid [(EDTA), (C10H16N2O8)] as a complexing agent, and 0.1 g of selenourea [CSe(NH2)2] as a selenium source. Ammonia (NH3) is employed to adjust the pH value of the solutions and varying amounts of Na2SO3 (from 0.1 to 1.6 g) are used as a reducing agent. This chemical combination has been used for the first time to produce CdSe thin films. X‐ray diffraction (XRD) results confirm that CdSe thin films exhibit a hexagonal structure without requiring annealing. The energy band gap values calculated via absorption graphs range from 1.76 to 1.91 eV. The surface morphologies are examined using scanning electron microscope (SEM) images. SEM images show that there are no voids, cracks, or pinholes. The software named ImageJ is used to determine surface roughness, showing range from 6 to 8 nm. The photographs of the samples show that some films adhere homogeneously to the surfaces of substrates, depending on the amount of Na2SO3 used.

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化学沉积镉硒薄膜的新方法

本研究旨在利用化学沉积法（CBD）生产具有六边形结构的硒化镉（CdSe）薄膜。本研究使用 0.075 克氯化镉（CdCl2）作为镉源，0.06 克乙二胺四乙酸[(EDTA), (C10H16N2O8)]作为络合剂，0.1 克硒脲[CSe(NH2)2]作为硒源。氨（NH3）用于调节溶液的 pH 值，不同量的 Na2SO3（0.1 至 1.6 克）用作还原剂。这种化学组合首次用于生产硒化镉薄膜。X 射线衍射 (XRD) 结果证实，硒化镉薄膜无需退火即可呈现六边形结构。通过吸收图计算得出的能带隙值在 1.76 至 1.91 eV 之间。利用扫描电子显微镜（SEM）图像对表面形貌进行了检测。扫描电子显微镜图像显示没有空洞、裂缝或针孔。使用名为 ImageJ 的软件测定表面粗糙度，显示范围为 6 至 8 纳米。样品的照片显示，一些薄膜均匀地附着在基底表面，这取决于所使用的 Na2SO3 的量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica Status Solidi A-applications and Materials Science 工程技术-材料科学：综合

CiteScore

3.70

自引率

5.00%

发文量

393

审稿时长

2 months

期刊介绍： The physica status solidi (pss) journal group is devoted to the thorough peer review and the rapid publication of new and important results in all fields of solid state and materials physics, from basic science to applications and devices. Among the largest and most established international publications, the pss journals publish reviews, letters and original articles, as regular content as well as in special issues and topical sections.