Synthesising of MgSe Complex Nanoparticle via Bacteria and Characterisation of Fabricated MgSe/p-Si Structure

T. Çakıcıa, Ö. Gür Özdalb aDepartment of Electricity and Energy, Ispir Hamza Polat Vocational School of Higher Education, Ataturk University, Erzurum, Turkey bDepartment of Biology, Science Faculty, Ataturk University, Erzurum, Turkey

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In this study, we have for the first time reduced complex MgSe nanoparticles to a compound by applying the bacterial synthesizing method using Pseudomonas aeruginosa OG1 strain. Complex MgSe nanoparticles reduced by bacteria in a compound form were grown as thin films on glass and p-Si substrates. Electronic, optical, crystal and morphological properties, and chemical composition of these samples were determined by an ultraviolet-visible spectrometer, X-ray D-diffractometer, and field emission-scanning electron microscopy, atomic force microscopy, and electron diffusion X-ray techniques. From the UV-VIS measurements, it was found that the band gap energy of an MgSe thin film sample was 2.53 eV. An X-ray D-diffractometer measurement of the MgSe thin film sample grown on the p-Si substrate indicated that the thin film sample has a high-quality polycrystalline structure and grains having equal sizes are distributed uniformly. Field emission-scanning electron microscopy and atomic force microscopy measurements demonstrated that the granules forming in the thin film sample are distributed uniformly in the same regions, and also, the granules have regular spherical shapes, sizes, and the same separations and the interface width (rms) values and Ra values, 9.68 nm and 7.40 nm, are obtained, respectively. The electron diffusion X-ray measurement shows that the weights and atomic weights of materials in this structure are as expected concerning their weights and atomic weights.

DOI:10.12693/APhysPolA.140.9 topics: nanoparticles, band gap, bacterial synthesis, thin films