Effects of Cobalt Doping on Optical Properties of ZnO Thin Films Deposited by Sol–Gel Spin Coating Technique
Cobalt (Co) doped Zinc Oxide (ZnO) thin films, containing different amountof Cobalt nanoparticles as the Co doping source, deposited by the sol–gel spin coatingmethod onto glass via annealing temperature at 400˚C, have been investigated by opticalcharacterization method. The effect of Co incorporati...
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| Format: | Article |
| Language: | English |
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Islamic Azad University, Marvdasht Branch
2017-12-01
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| Series: | Journal of Optoelectronical Nanostructures |
| Subjects: | |
| Online Access: | https://jopn.marvdasht.iau.ir/article_2572_bc6db18bc665d1684edaa10d3ade3ee1.pdf |
| _version_ | 1797740982848978944 |
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| author | Mahmood Borhani Zarandi Hojjat Amrollahi Bioki |
| author_facet | Mahmood Borhani Zarandi Hojjat Amrollahi Bioki |
| author_sort | Mahmood Borhani Zarandi |
| collection | DOAJ |
| description | Cobalt (Co) doped Zinc Oxide (ZnO) thin films, containing different amountof Cobalt nanoparticles as the Co doping source, deposited by the sol–gel spin coatingmethod onto glass via annealing temperature at 400˚C, have been investigated by opticalcharacterization method. The effect of Co incorporation on the surface morphology wasclearly observed from scanning electron microscopy (SEM) images. Opticalconductivity and optical constants such as absorption coefficient, reflectivity, extinctioncoefficient, and refractive index as a function of photon energy were calculated, and itwas found that the doping with Co led to decrease absorption coefficient, extinctioncoefficient, refractive index and bandgap energy, while the optical conductivityincreased at higher photon energies. The optical band gap depends on the Co dopinglevel and on the particle size and crystallinity of the films and is in the range of 3.05–3.17 eV. The optical band gap widening is proportional to the one-third power of thecarrier concentration. |
| first_indexed | 2024-03-12T14:20:18Z |
| format | Article |
| id | doaj.art-46c18a077ffe412ab13bf3d5e7f4524b |
| institution | Directory Open Access Journal |
| issn | 2423-7361 2538-2489 |
| language | English |
| last_indexed | 2024-03-12T14:20:18Z |
| publishDate | 2017-12-01 |
| publisher | Islamic Azad University, Marvdasht Branch |
| record_format | Article |
| series | Journal of Optoelectronical Nanostructures |
| spelling | doaj.art-46c18a077ffe412ab13bf3d5e7f4524b2023-08-19T09:13:20ZengIslamic Azad University, Marvdasht BranchJournal of Optoelectronical Nanostructures2423-73612538-24892017-12-012433442572Effects of Cobalt Doping on Optical Properties of ZnO Thin Films Deposited by Sol–Gel Spin Coating TechniqueMahmood Borhani Zarandi0Hojjat Amrollahi Bioki1Atomic and Molecular Group, Faculty of Physics, Yazd University, Yazd, IranDepartment of Physics, Tarbiat Modares University, Tehran, IranCobalt (Co) doped Zinc Oxide (ZnO) thin films, containing different amountof Cobalt nanoparticles as the Co doping source, deposited by the sol–gel spin coatingmethod onto glass via annealing temperature at 400˚C, have been investigated by opticalcharacterization method. The effect of Co incorporation on the surface morphology wasclearly observed from scanning electron microscopy (SEM) images. Opticalconductivity and optical constants such as absorption coefficient, reflectivity, extinctioncoefficient, and refractive index as a function of photon energy were calculated, and itwas found that the doping with Co led to decrease absorption coefficient, extinctioncoefficient, refractive index and bandgap energy, while the optical conductivityincreased at higher photon energies. The optical band gap depends on the Co dopinglevel and on the particle size and crystallinity of the films and is in the range of 3.05–3.17 eV. The optical band gap widening is proportional to the one-third power of thecarrier concentration.https://jopn.marvdasht.iau.ir/article_2572_bc6db18bc665d1684edaa10d3ade3ee1.pdfcobalt doped zno thin filmoptical propertiessol-gel |
| spellingShingle | Mahmood Borhani Zarandi Hojjat Amrollahi Bioki Effects of Cobalt Doping on Optical Properties of ZnO Thin Films Deposited by Sol–Gel Spin Coating Technique Journal of Optoelectronical Nanostructures cobalt doped zno thin film optical properties sol-gel |
| title | Effects of Cobalt Doping on Optical Properties of ZnO Thin Films Deposited by Sol–Gel Spin Coating Technique |
| title_full | Effects of Cobalt Doping on Optical Properties of ZnO Thin Films Deposited by Sol–Gel Spin Coating Technique |
| title_fullStr | Effects of Cobalt Doping on Optical Properties of ZnO Thin Films Deposited by Sol–Gel Spin Coating Technique |
| title_full_unstemmed | Effects of Cobalt Doping on Optical Properties of ZnO Thin Films Deposited by Sol–Gel Spin Coating Technique |
| title_short | Effects of Cobalt Doping on Optical Properties of ZnO Thin Films Deposited by Sol–Gel Spin Coating Technique |
| title_sort | effects of cobalt doping on optical properties of zno thin films deposited by sol gel spin coating technique |
| topic | cobalt doped zno thin film optical properties sol-gel |
| url | https://jopn.marvdasht.iau.ir/article_2572_bc6db18bc665d1684edaa10d3ade3ee1.pdf |
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