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Pulse electrodeposited bismuth-tellurium superlattices with controllable bismuth content

Bakavets Aliaksei; Aniskevich Yauhen; Yakimenko Oleg; Jo Hyeon Jae; Vernickaite Edita; Tsyntsaru Natalia; Cesiulis Henrikas; Kuo Liang-Yin; Kaghazchi Payam; Ragoisha Genady; Myung Seung-Taek; Streltsov Eugene


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{
  "publisher": "Zenodo", 
  "DOI": "10.5281/zenodo.3715392", 
  "title": "Pulse electrodeposited bismuth-tellurium superlattices with controllable bismuth content", 
  "issued": {
    "date-parts": [
      [
        2020, 
        3, 
        18
      ]
    ]
  }, 
  "abstract": "<p>Superlattice structures of (Bi2)m(Bi2Te3)n series with controllable Bi mole fraction from 0.41 to<br>\n0.71 are electrodeposited in pulse potentiostatic mode from acidic electrolytes containing Bi(NO3)3 and<br>\nTeO2 as precursors. Two valence states of bismuth in superlattices are identified by X-ray photoelectron<br>\nspectroscopy (XPS). One of those states is attributed to interlayered Bi0 which is present in<br>\n(Bi2)m(Bi2Te3)n superlattice in the form of biatomic layers between bismuth telluride quintuples. X-ray<br>\ndifraction (XRD) analysis and density functional theory (DFT) calculations indicate an increase in subcell</p>\n\n<p>parameter asub and decrease in subcell parameter csub with the increase of Bi mole fraction. Biatomic<br>\nlayers of Bi0 are identified with cyclic voltammetry by characteristic anodic peak between potentials of<br>\nmetallic bismuth and Bi2Te3 oxidation. The selective oxidation of Bi-bilayers in (Bi2)m(Bi2Te3)n<br>\nsuperlattice at the potential of the anodic peak results in the product corresponding to Bi2Te3 by<br>\nstoichiometry, but having an expanded crystal structure. Superlattices with controllable Bi mole fraction<br>\nand Bi2Te3 with &quot;memory effect&quot; may be of interest for design of new thermoelectric materials with<br>\ncontrollable parameters</p>", 
  "author": [
    {
      "family": "Bakavets Aliaksei"
    }, 
    {
      "family": "Aniskevich Yauhen"
    }, 
    {
      "family": "Yakimenko Oleg"
    }, 
    {
      "family": "Jo Hyeon Jae"
    }, 
    {
      "family": "Vernickaite Edita"
    }, 
    {
      "family": "Tsyntsaru Natalia"
    }, 
    {
      "family": "Cesiulis Henrikas"
    }, 
    {
      "family": "Kuo Liang-Yin"
    }, 
    {
      "family": "Kaghazchi Payam"
    }, 
    {
      "family": "Ragoisha Genady"
    }, 
    {
      "family": "Myung Seung-Taek"
    }, 
    {
      "family": "Streltsov Eugene"
    }
  ], 
  "note": "This is a post-peer-review, pre-copyedit version of an article published in Journal of Power Sources. The final authenticated version is available online at: https://doi.org/10.1016/j.jpowsour.2019.227605", 
  "type": "article-journal", 
  "id": "3715392"
}
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