Metal-organic chemical vapour deposition of lithium manganese oxide thin films via single solid source precursor

• Autorzy: Oyedotun K. O. , Ajenifuja E. , Olofinjana B. , Taleatu B. A. , Omotoso E. , Eleruja M. A. , Ajayi E. O. B.

Identyfikatory

DOI

10.1515/msp-2015-0102

• Języki publikacji: EN

Abstrakty

EN

Lithium manganese oxide thin films were deposited on sodalime glass substrates by metal organic chemical vapour deposition (MOCVD) technique. The films were prepared by pyrolysis of lithium manganese acetylacetonate precursor at a temperature of 420 degrees C with a flow rate of 2.5 dm³/min for two-hour deposition period. Rutherford backscattering spectroscopy (RBS), UV-Vis spectrophotometry, X-ray diffraction (XRD) spectroscopy, atomic force microscopy (AFM) and van der Pauw four point probe method were used for characterizations of the film samples. RBS studies of the films revealed fair thickness of 1112.311 (10¹⁵ atoms/cm²) and effective stoichiometric relationship of Li_0.47Mn_0.27O_0.26. The films exhibited relatively high transmission (50 % T) in the visible and NIR range, with the bandgap energy of 2.55 eV. Broad and diffused X-ray diffraction patterns obtained showed that the film was amorphous in nature, while microstructural studies indicated dense and uniformly distributed layer across the substrate. Resistivity value of 4.9 Omega.cm was obtained for the thin film. Compared with Mn_0.2O_0.8thin film, a significant lattice absorption edge shift was observed in the Li_0.47Mn_0.27O_0.26film.

Słowa kluczowe

EN

MOCVD; thin film; pyrolysis; Li0; 47Mn0; 27O0; 26; Rutherford backscattering; bandgap energy

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2015
• Tom: Vol. 33, No. 4
• Strony: 725--731
• Opis fizyczny: Bibliogr. 27 poz., rys.

Twórcy

autor

Oyedotun K. O.

• Department of Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

autor

Ajenifuja E.

• Centre for Energy Research and Development, Obafemi Awolowo University, Ile-Ife, Nigeria.

autor

Olofinjana B.

• Department of Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

autor

Taleatu B. A.

• School of Chemistry and Physics, University of KwaZulu Natal Pietermaritzburg, P Bag X01 Scottsville 3209, South Africa

autor

Omotoso E.

• Department of Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

autor

Eleruja M. A.

• Department of Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

autor

Ajayi E. O. B.

• Department of Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

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