摘要
The effect of iron concentration on the microstructural and structural properties of ZnO for electrolysis and photodetector applications was investigated.The thin layers of un-doped and doped ZnO with different percentages of Fe(2,4,and 6 wt.%)were deposited by spin-coating on glass substrates.Sample characterization was done by X-ray diffraction(XRD),atomic force microscopy(AFM),scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy(EDS),UV−Vis absorption spectra and X-ray photoelectron spectroscopy(XPS).Structural measurements by XRD showed that all the layers were composed of polycrystallines with a hexagonal Wurtzite structure.Two new peaks were also discovered after the doping process belonging to the Fe_(2)O_(4)(400)and(440)crystal phase.Morphological analysis showed that the surface roughness values of ZnO layers ranged between 8 and 45 nm.XPS studies confirmed the presence of Fe in 3+states in ZnO layers.An average transmittance of 90%was measured by UV−Vis in the wavelength range of 200−900 nm.The values of the energy gap(Eg)decreased with an increase in the concentration of Fe.AFM topography results confirmed that ZnO-based thin layers had a relatively uniform surface.The efficiency of these samples has been confirmed for their use in many electrical applications,including photodetectors and electrolysis of contaminated solutions.
探讨铁浓度对应用于电解和光电探测器的氧化锌显微组织和结构特性的影响。通过旋涂法在玻璃基底上沉积了未掺杂和掺杂不同含量铁(2%、4%和6%,质量分数)的氧化锌薄膜。采用X射线衍射(XRD)、原子力显微镜(AFM)、扫描电子显微镜(SEM)、能量色散X射线光谱(EDS)、紫外-可见吸收光谱以及X射线光电子能谱(XPS)等表征样品。XRD结果表明,所有薄膜均为具有六方纤锌矿结构的多晶材料。掺杂后发现了两个新的衍射峰(400)和(440),属于Fe_(2)O_(4)晶相。形貌分析显示,氧化锌薄膜的表面粗糙度为8~45 nm。XPS研究确认了氧化锌层中存在Fe3+。紫外光谱测量显示,在200~900 nm波长范围内,薄膜的平均透射率为90%。随着铁浓度的增加,带隙(Eg)值逐渐减小。AFM表面形貌分析表明,氧化锌薄膜具有相对均匀的表面。这些样品在包括光电探测器和污染溶液电解在内的多种电气应用的效率已得到验证。
作者
Dikra BOURAS
Mamoun FELLAH
Regis BARILLE
Amjad IQBAL
Hamadi FOUZIA
Obrosov ALEKSEI
Gamal AEL-HITI
Dikra BOURAS;Mamoun FELLAH;Régis BARILLÉ;Amjad IQBAL;Hamadi FOUZIA;Obrosov ALEKSEI;Gamal AEL-HITI(Faculty of Science and Technology,University of Souk-Ahras,Algeria;Mechanical Engineering Department,ABBES Laghrour University,Khenchela PO 1252,CP 40004,Algeria;Biomaterial,Synthesis and Tribology Research Team,ABBES Laghrour-University,Khenchela,P.O 1252,40004,Algeria;MOLTECH-Anjou,Universitéd’Angers/UMR CNRS 6200,2 Bd Lavoisier,49045 Angers,France;Department of Materials Technologies,Faculty of Materials Engineering,Silesian University of Technology,Krasińskiego 8,40-019,Katowice,Poland;Matter Science Department,ABBES Laghrour University,Khenchela PO 1252,CP 40004,Algeria;Brandenburg University of Technology Cottbus-Senftenberg,03046,Cottbus,Germany;Department of Optometry,College of Applied Medical Sciences,King Saud University,Riyadh 11433,Saudi Arabia)
基金
the support received from the Researchers Supporting Project(No.RSP2024R404),King Saud University,Riyadh,Saudi Arabia。
