Ferromagnetic, Optical and Photoluminescence Behavior of Ni-Doped ZnO Thin Films

IF 2.8 3区化学 Q2 CHEMISTRY, APPLIED

Topics in Catalysis Pub Date : 2023-11-25 DOI:10.1007/s11244-023-01886-5

L. Suganya, K S. Balamurugan, A. Sivakami, P. Sakthivel, Nidhi Asthana, B. Sundaresan

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Abstract

Ni-doped ZnO (NZO) thin films were prepared onto a glass substrate with varying concentrations of 2, 4, 6, 8, 10% of Ni using sol-gel spin coating method and their structural, optical and magnetic characteristics were discussed with supporting of XRD, UV, Photoluminescence, XPS and vibrating sample magnetometer (VSM) characterization techniques. The XRD analysis shows that the polycrystalline hexagonal wurtzite structure with (002) orientation of NZO thin films. The XPS results confirmed the presence of Ni ion in all the samples. The optical bandgap of the prepared samples was decreased with increasing concentrations of nickel from 3.33 to 3.22 eV. Photoluminescence spectra showed a red shift of near band edge (NBE) and deep level (DLE) emissions for prepared undoped and NZO thin films. The VSM of prepared NZO thin films exhibit ferromagnetic behavior at room temperature for potential applications in various fields. Our experimental observations support for transparent conducting electrode and spintronics device applications.

Graphical Abstract

Abstract Image

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ni掺杂ZnO薄膜的铁磁、光学和光致发光行为

采用溶胶-凝胶自旋镀膜的方法，在Ni浓度分别为2、4、6、8、10%的玻璃基板上制备了掺杂Ni的ZnO (NZO)薄膜，并用XRD、UV、光致发光、XPS和振动样品磁强计(VSM)表征技术对其结构、光学和磁性进行了表征。XRD分析表明，该多晶六方纤锌矿结构具有(002)取向的NZO薄膜。XPS结果证实所有样品中均存在镍离子。随着镍浓度从3.33 eV增加到3.22 eV，制备样品的光学带隙减小。制备的未掺杂和NZO薄膜的光致发光光谱显示出近带边缘(NBE)和深能级(DLE)发射的红移。制备的NZO薄膜在室温下表现出铁磁性，具有广泛的应用前景。我们的实验结果支持透明导电电极和自旋电子学器件的应用。图形抽象

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来源期刊

Topics in Catalysis 化学-物理化学

CiteScore

5.70

自引率

5.60%

发文量

197

审稿时长

2 months

期刊介绍： Topics in Catalysis publishes topical collections in all fields of catalysis which are composed only of invited articles from leading authors. The journal documents today’s emerging and critical trends in all branches of catalysis. Each themed issue is organized by renowned Guest Editors in collaboration with the Editors-in-Chief. Proposals for new topics are welcome and should be submitted directly to the Editors-in-Chief. The publication of individual uninvited original research articles can be sent to our sister journal Catalysis Letters. This journal aims for rapid publication of high-impact original research articles in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.