Spray pyrolysis developed Nd doped Co3O4 nanostructured thin films and their structural, and opto-nonlinear properties for optoelectronics applications

• Published in: Optics and laser technology Vol. 150; p. 107959
• Main Authors: Shkir, Mohd, Khan, Aslam, Imran, Mohd, Ajmal Khan, M., Zargar, Rayees Ahmad, Alshahrani, Thamraa, Deva Arun Kumar, K., Mohanraj, P., Chandekar, Kamlesh V., AlFaify, S.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.06.2022; Elsevier BV
• Subjects: Cobalt oxides; Crystallites; Dielectric and electrical properties; Electrical properties; Energy gap; Nanostructure; Nd doped Co3O4 thin films; Neodymium; Nonlinear optics; Optical properties; Optoelectronics; Photoluminescence; Refractivity; Spray pyrolysis; Structural properties; Substrates; Thin films; Nonlinear optics; Optical properties; Structural properties; Nd doped Co3O4 thin films; Dielectric and electrical properties
• ISSN: 0030-3992; 1879-2545
• DOI: 10.1016/j.optlastec.2022.107959

[Display omitted] •Novel pure and Nd doped Co3O4 films were developed by cost-effective spray pyrolysis route.•XRD/Raman/EDX/SEM e-mapping studies approves the monophasic Nd:Co3O4 films fabrication.•Enhancement in photoluminescence emission intensity was observed and discussed.•The χ3 values are found between 4 × 10-13 to 1.27 × 10-10 esu for Nd doped Co3O4 films.•Nonlinear refractive index (n2) are found between 5.86 and 1.35(×10-9) esu., for Nd:Co3O4. Herein we are reporting the facile spray pyrolysis fabrication of different Neodymium (Nd) contents loaded cobalt oxide (Co3O4) nanostructured thin films at 400 °C substrate temperature and investigated for opto-nonlinear applications. Structural and vibrational studies approve the cubic system of all films with the low crystallite size between 25 and 20 nm. FESEM e-mapping and EDX analyses further confirm the homogeneous Nd doping in Co3O4 films. FESEM study reveals that the grains are very fine and distributed throughout the films. The optical study reveals that the grown films possess two energy gaps which are between 2.03 and 2.15 eV and 1.49–1.55 eV. Photoluminescence study has been performed at three different excitation wavelengths and the mono-emission was noticed at 375, 500 and 754 nm. Furthermore, the linear absorption and refractive indices were determined along with dielectric and electrical properties. Also, the nonlinear susceptibility and refractive index were determined and found to be in range of 4 × 10-13 to 1.27 × 10-10 esu and 5.86 × 10-12 to 1.35 × 10-9 esu., respectively.