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Beneficial effect of tributylphosphine to the photoluminescence of PbSe and PbSe/CdSe nanocrystals

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Abstract

A small quantity of tributylphosphine was employed to improve the surface state of fresh and oxidized PbSe nanocrystals after the formation of nanocrystals. Experimental results showed that the photoluminescence intensity increased in both situations. However, an excessive amount of tributylphosphine exhibited negative effects of decreasing photoluminescence and particle aggregation. A suitable amount of tributylphosphine added before the synthesis of a CdSe shell on PbSe core (PbSe/CdSe) also exhibited a photoluminescence intensity increase for these core/shell nanocrystals.

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Acknowledgment

This study was supported by the Worcester Polytechnic Institute, the National 863 Projects of China (2007AA03Z112, 2007AA06Z112), and the State Key Laboratory on Integrated Optoelectronics, Jilin University.

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Authors and Affiliations

  1. State Key Laboratory on Integrated Optoelectronics, and College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China

    Yu Zhang, Yiding Wang & William W. Yu

  2. Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, MA, 01609, USA

    Yu Zhang, Quanqin Dai, Xinbi Li & William W. Yu

  3. State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, China

    Bo Zou

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  1. Yu Zhang
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  2. Quanqin Dai
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  3. Xinbi Li
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  4. Bo Zou
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  5. Yiding Wang
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  6. William W. Yu
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Correspondence to Yiding Wang or William W. Yu.

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Zhang, Y., Dai, Q., Li, X. et al. Beneficial effect of tributylphosphine to the photoluminescence of PbSe and PbSe/CdSe nanocrystals. J Nanopart Res 13, 3721–3729 (2011). https://doi.org/10.1007/s11051-011-0293-3

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  • DOI: https://doi.org/10.1007/s11051-011-0293-3

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