Açık Akademik Arşiv Sistemi

Effect of Se content on the structural, morphological and optical properties of Bi2Te3-ySey thin films electrodeposited by under potential deposition technique

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dc.contributor.authors Sisman, I; Basoglu, A;
dc.date.accessioned 2020-01-20T08:02:24Z
dc.date.available 2020-01-20T08:02:24Z
dc.date.issued 2016
dc.identifier.citation Sisman, I; Basoglu, A; (2016). Effect of Se content on the structural, morphological and optical properties of Bi2Te3-ySey thin films electrodeposited by under potential deposition technique. MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 54, 64-57
dc.identifier.issn 1369-8001
dc.identifier.uri https://hdl.handle.net/20.500.12619/32209
dc.identifier.uri https://doi.org/10.1016/j.mssp.2016.07.001
dc.description.abstract Bi2Te3-ySey thin films with different Se contents ranging from 0.3 to 2.5 were successfully electrodeposited by under potential deposition (UPD) technique onto gold foil substrates from an electrolyte consist of Bi(NO3)(3), TeO2, and SeO2 at ambient conditions. The effects of Se content on structural, morphological and optical properties of the products were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and FT-IR spectroscopy, respectively. The XRD analysis revealed that the diffraction peaks positions of Bi2Te3-ySey thin films shifts gradually towards the higher angle side due to replacement of Te by Se atoms in the crystal structure with increasing Se content. The SEM results showed that the particle size of Bi2Te3-ySe(y) thin films decreased as the Se content increased. The optical constants of ternary Bi2Te3-ySey thin films such as refractive index, extinction coefficient, and dielectric constant were obtained from the transmission spectra in the range of 2500-10.000 nm. The direct allowed band gap energies were estimated using Tauc equation and found to increase from 0.210 to 0.282 eV with increasing Se content from 0.3 to 2.5. The dispersion behavior of refractive index was studied by the single oscillator Wemple-DiDomenico model. (C) 2016 Elsevier Ltd. All rights reserved.
dc.language English
dc.publisher ELSEVIER SCI LTD
dc.subject Physics
dc.title Effect of Se content on the structural, morphological and optical properties of Bi2Te3-ySey thin films electrodeposited by under potential deposition technique
dc.type Article
dc.identifier.volume 54
dc.identifier.startpage 57
dc.identifier.endpage 64
dc.contributor.department Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü
dc.contributor.saüauthor Şişman, İlkay
dc.contributor.saüauthor Başoğlu, Adil
dc.relation.journal MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
dc.identifier.wos WOS:000382346800009
dc.identifier.doi 10.1016/j.mssp.2016.07.001
dc.identifier.eissn 1873-4081
dc.contributor.author Ilkay Sisman
dc.contributor.author Şişman, İlkay
dc.contributor.author Adil Basoglu
dc.contributor.author Başoğlu, Adil


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