The Formation Mechanism of Binary Semiconductor Nanomaterials: Shared by Single-Source and Dual-Source Precursor Approaches

Authors

  • Dr. Kui Yu,

    Corresponding author
    1. National Research Council of Canada, Ottawa, ON, K1A 0R6 (Canada)
    • Kui Yu, National Research Council of Canada, Ottawa, ON, K1A 0R6 (Canada)

      Mingli Yang, Institute of Atomic and Molecular Physics and State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610065 (P. R. China)

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  • Dr. Xiangyang Liu,

    1. National Research Council of Canada, Ottawa, ON, K1A 0R6 (Canada)
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  • Qun Zeng,

    1. Institute of Atomic and Molecular Physics and State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610065 (P. R. China)
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  • Prof. Mingli Yang,

    Corresponding author
    1. Institute of Atomic and Molecular Physics and State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610065 (P. R. China)
    • Kui Yu, National Research Council of Canada, Ottawa, ON, K1A 0R6 (Canada)

      Mingli Yang, Institute of Atomic and Molecular Physics and State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610065 (P. R. China)

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  • Dr. Jianying Ouyang,

    1. National Research Council of Canada, Ottawa, ON, K1A 0R6 (Canada)
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  • Xinqin Wang,

    1. Institute of Atomic and Molecular Physics and State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610065 (P. R. China)
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  • Dr. Ye Tao

    1. National Research Council of Canada, Ottawa, ON, K1A 0R6 (Canada)
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  • K.Y. thanks Dr. Keith Ingold for valuable discussions and Dr. Danial Wayner for precious encouragement. The authors thanks Erik Huisman for some of the in situ absorption measurements presented and the Defence Research and Development Canada Centre for Security Science Chemical, Biological, Radiological/Nuclear, and Explosives Research and Technology Initiative (CRTI 09-0511RD “Next-generation stand-off radiation detection using nanosensors”) for financial support.

Abstract

original image

One thing in common: The formation of binary colloidal semiconductor nanocrystals from single- (M(EEPPh2)n) and dual-source precursors (metal carboxylates M(OOCR)n and phosphine chalcogenides such as E=PHPh2) is found to proceed through a common mechanism. For CdSe as a model system 31P NMR spectroscopy and DFT calculations support a reaction mechanism which includes numerous metathesis equilibriums and Se exchange reactions.

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