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Synthesis, characterization, and electrical property of CdTe/trioctylphosphine oxide core/shell nanowires

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Abstract

Thick trioctylphosphine oxide (TOPO) layers were controllably coated onto CdTe nanowires. The shell thicknesses were readily tuned by controlling the reaction temperatures in coordinating TOPO solvent or by varying amounts of TOPO in noncoordinating ODE solvent. The shells were coherent and rough if synthesized in the TOPO solvent, while the shells became very uniform and smooth if synthesized in the ODE solvent. The electrically insulating effects of TOPO shells were directly confirmed through nanodevice of individual core/shell nanowire (NW). The present scheme to overcoat TOPO around semiconductor NWs could, in principle, be exploited to be a general approach to encapsulate a variety of colloidal nanocrystals to form novel core–shell nanohybrids.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (11179037, 51402242), the Fundamental Research Funds for the Central Universities (XDJK2014C134, SWU113024), and the Cultural Program for Young Talents of Science and Technology in Innovating New Products from Chongqing Science & Technology Commission (CSTC2013KJRC-QNRC50001).

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Authors and Affiliations

  1. Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, 230026, People’s Republic of China

    Chi Yang & Xin Xu

  2. School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People’s Republic of China

    Sheng Liu

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  1. Chi Yang
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  2. Sheng Liu
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  3. Xin Xu
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Correspondence to Sheng Liu or Xin Xu.

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Yang, C., Liu, S. & Xu, X. Synthesis, characterization, and electrical property of CdTe/trioctylphosphine oxide core/shell nanowires. J Mater Sci 50, 3103–3109 (2015). https://doi.org/10.1007/s10853-015-8870-y

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  • DOI: https://doi.org/10.1007/s10853-015-8870-y

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