Formation of Nanoscale Composites of Compound Semiconductors Driven by Charge Transfer

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

5 Scopus Citations
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Author(s)

  • Weiwei Gao
  • Roberto Dos Reis
  • Laura T. Schelhas
  • Vanessa L. Pool
  • Michael F. Toney
  • Wladek Walukiewicz

Detail(s)

Original languageEnglish
Pages (from-to)5247-5254
Journal / PublicationNano Letters
Volume16
Issue number8
Publication statusPublished - 10 Aug 2016

Abstract

Composites are a class of materials that are formed by mixing two or more components. These materials often have new functional properties compared to their constituent materials. Traditionally composites are formed by self-assembly due to structural dissimilarities or by engineering different layers or structures in the material. Here we report the synthesis of a uniform and stoichiometric composite of CdO and SnTe with a novel nanocomposite structure stabilized by the dissimilarity of the electronic band structure of the constituent materials. The composite has interesting electronic properties which range from highly n-type in CdO to semi-insulating in the intermediate composition range to highly p-type in SnTe. This can be explained by the overlap of the conduction and valence band of the constituent compounds. Ultimately, our work identifies a new class of composite semiconductors in which nanoscale self-organization is driven and stabilized by charge transfer between constituent materials.

Research Area(s)

  • charge transfer, Composite, electronic properties, self-assembly, semiconductor

Citation Format(s)

Formation of Nanoscale Composites of Compound Semiconductors Driven by Charge Transfer. / Gao, Weiwei; Dos Reis, Roberto; Schelhas, Laura T.; Pool, Vanessa L.; Toney, Michael F.; Yu, Kin Man; Walukiewicz, Wladek.

In: Nano Letters, Vol. 16, No. 8, 10.08.2016, p. 5247-5254.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review