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Facile Synthesis of Semiconductor-Metal Hybrid Nanoparticles with an Anisotropic Structure

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Abstract

Here we report a facile and versatile procedure for the preparation of semiconductormetal hybrid nanoparticles with an anisotropic structure consisting of bismuth telluride (Bi2Te3) and gold (Au) (or silver (Ag)) nanoparticles. We simply added flake-shaped Bi2Te3 nanoparticles (Bi2Te3 nanoflakes) and trisodium citrate to an aqueous Au or Ag precursor solution heated to boiling. The edge part of the Bi2Te3 nanoflake was preferentially modified with Au or Ag nanoparticles, and the Bi2Te3-Au hybrid nanoparticles had a broad peak of light absorption around the visible region and a higher thermoelectric power factor than ordinary Bi2Te3nanoflakes. Because of the simplicity of the procedure, the hybrid nanoparticles are expected to be used as a new class of functional materials in the large scale production.

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Acknowledgments

The authors would like to thank Mr. D. Kato and Mr. M. D. Al-Sharabi for the experimental support.

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Authors and Affiliations

  1. Research Laboratories, Toyota Boshoku Corporation, Kariya, Aichi, 448-8651, Japan

    Akira Ohnuma & Kouta Iwasaki

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  1. Akira Ohnuma
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  2. Kouta Iwasaki
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Ohnuma, A., Iwasaki, K. Facile Synthesis of Semiconductor-Metal Hybrid Nanoparticles with an Anisotropic Structure. MRS Online Proceedings Library 1748, 76–81 (2014). https://doi.org/10.1557/opl.2016.56

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  • DOI: https://doi.org/10.1557/opl.2016.56

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