عنوان المقالة: Surface structural features and optical analysis of nanostructured Cu-oxide thin film coatings coated via the sol-gel dip coating method
Amun Amri, Kamrul Hasan, Hatem Taha, M. Mahbubur Rahmand, Syamsu Herman, Andrizal, Ella Awaltanova, I. wantono, Humayun Kabir, Chun-Yang Yin, Khalil Ibrahim, Syaiful Bahri, Neni Frimayanti, Md Abul Hossain, Zhong-Tao Jiang
الملخص الانجليزي
Nanostructured thin film coatings of copper oxide (Cu-oxide) were investigated to determine their physical
structure, surface morphology, surface electronic bonding states, and optical properties. The Cu-oxide had been
coated onto reflective aluminum substrates via a facile one-step sol–gel dip-coating route using a copper nitrate
precursor. Characterizations were conducted using X-ray diffraction (XRD), X-ray photoelectron spectroscopy
(XPS), atomic force microscopy (AFM), field emission scanning electron microscopy (FESEM), and ultra-violet
visible (UV–Vis) spectroscopic methods, and representative sol-gel reactions using copper nitrate precursor were
proposed. The XPS spectra confirmed the presence of copper oxide elements. Further exploration of the Cu2p3/2
peak in XPS spectra revealed that the electronic structure of the copper component consisted of tetrahedral Cu(I)
and octahedral Cu(II) with the presence of octahedral Cu(II) enabling coatings to have high absorption levels
across the solar spectrum. The deconvolution of the O1s spectra exhibited three curve-fitting components: the
lattice O2−, surface oxygen, and subsurface O− species. FESEM results showed that the coating surface was an
agglomerated copper oxide nanoparticles structure forming a porous structure. The optical band-gap of Cu-oxide
thin film coatings, via the Tauc plot, was 2.7 eV
تاريخ النشر
29/03/2019
الناشر
Ceramics International/ Elsevier
رقم المجلد
رقم العدد
42
ISSN/ISBN
0272-8842
رابط DOI
https://doi.org/10.1016/j.ceramint.2019
الصفحات
888–12894
الكلمات المفتاحية
Nanostructured Cu-oxide thin film coatings Facile synthesis Porous Surface electronics
حاتم عبدالرزاق طه | Hatem Taha | 3229