4.6 Article

Enhancement in structural, morphological, and optical properties of copper oxide for optoelectronic device applications

期刊

NANOTECHNOLOGY REVIEWS
卷 11, 期 1, 页码 2827-2838

出版社

DE GRUYTER POLAND SP Z O O
DOI: 10.1515/ntrev-2022-0473

关键词

copper oxide; XRD; Raman; SEM; FTIR; UV; optoelectronic devices

向作者/读者索取更多资源

CuO specimens prepared at different calcination temperatures exhibited single-phase structure, with variations in crystalline size and porosity. The optical properties were improved with increasing calcination temperature, making them suitable for optoelectronic device applications.
In this study, copper oxide (CuO) specimens were successfully prepared by the hydrothermal process at altered calcination temperatures; 350, 450, and 550 degrees C. The synthesized samples were analyzed through X-ray powder diffraction (XRD), scanning electron microscope (SEM), Raman, Fourier-transform infrared spectroscopy (FTIR), and UV-Vis spectroscopy to analyze the impact of calcination temperature on the structural, morphological, vibration spectra, functional group, and optical properties of CuO for optoelectronic device applications. XRD confirms the pure single-phase monoclinic structure of synthesized samples with no impurity phases and has good crystallinity with the development in calcination temperature. The average crystalline size, lattice constant, and porosity were found in the range of 3.98-5.06 nm; a = 3.4357 angstrom, b = 3.9902 angstrom, c = 4.8977 angstrom - a = 3.0573 angstrom, b = 3.9573 angstrom, c = 4.6892 angstrom; and 3.37-1.03%, respectively. SEM exhibited a variation in morphology by increasing calcination temperature. Raman spectra revealed that the CuO sample calcinated at 550 degrees C with a stone-like shape having a large grain size of 3.25 mu m exhibited that Raman peak intensity and the multiphonon band became stronger and sharper and exhibited higher intensity compared to the samples calcinated at 350 and 450 degrees C. FTIR spectra confirmed that these synthesized specimens exhibited the peaks associated with the typical stretching vibrations of the Cu-O bond between 400 and 500 cm(-1) exhibiting the formation of CuO. The energy bandgap was slightly reduced from 1.61 to 1.43 eV with the increase in the calcination temperature. The optical studies revealed that the calcination temperature of 550 degrees C improves the optical properties of CuO by tuning its optical bandgap. The modified structural, morphological, and optical characteristics of the prepared CuO samples make them an appropriate candidate for optoelectronic device applications.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据