Carrier transfer induced photoluminescence change in metal-semiconductor core-shell nanostructures

H. Y. Lin; Y. F. Chen; J. G. Wu; D. I. Wang; C. C. Chen

doi:10.1063/1.2197311

Carrier transfer induced photoluminescence change in metal-semiconductor core-shell nanostructures

H. Y. Lin^*, Y. F. Chen, J. G. Wu, D. I. Wang, C. C. Chen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

106 Citations (Scopus)

Abstract

Metal-semiconductor core-shell nanostructures have been synthesized to explore the influence of metal nanostructures on the photoluminescence of semiconductors. Up to 40 times enhancement in the emission intensity was observed in the Au-CdS core-shell nanostructures. The mechanism where the excited electrons on Au surface by surface plasmon wave transfer to the conduction band of the CdS shell and recombine with holes in the valence band was proposed to interpret the enhancement. Our model can also be used to explain the quenched emission in FePt-CdS core-shell nanostructures and Au-CdSe nanodumbbells.

Original language	English
Article number	161911
Journal	Applied Physics Letters
Volume	88
Issue number	16
DOIs	https://doi.org/10.1063/1.2197311
Publication status	Published - 2006 Apr 17
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Carrier transfer induced photoluminescence change in metal-semiconductor core-shell nanostructures",

abstract = "Metal-semiconductor core-shell nanostructures have been synthesized to explore the influence of metal nanostructures on the photoluminescence of semiconductors. Up to 40 times enhancement in the emission intensity was observed in the Au-CdS core-shell nanostructures. The mechanism where the excited electrons on Au surface by surface plasmon wave transfer to the conduction band of the CdS shell and recombine with holes in the valence band was proposed to interpret the enhancement. Our model can also be used to explain the quenched emission in FePt-CdS core-shell nanostructures and Au-CdSe nanodumbbells.",

author = "Lin, {H. Y.} and Chen, {Y. F.} and Wu, {J. G.} and Wang, {D. I.} and Chen, {C. C.}",

note = "Funding Information: This work was supported by the National Science Council and Ministry of Education of the Republic of China.",

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T1 - Carrier transfer induced photoluminescence change in metal-semiconductor core-shell nanostructures

AU - Lin, H. Y.

AU - Chen, Y. F.

AU - Wu, J. G.

AU - Wang, D. I.

AU - Chen, C. C.

N1 - Funding Information: This work was supported by the National Science Council and Ministry of Education of the Republic of China.

PY - 2006/4/17

Y1 - 2006/4/17

N2 - Metal-semiconductor core-shell nanostructures have been synthesized to explore the influence of metal nanostructures on the photoluminescence of semiconductors. Up to 40 times enhancement in the emission intensity was observed in the Au-CdS core-shell nanostructures. The mechanism where the excited electrons on Au surface by surface plasmon wave transfer to the conduction band of the CdS shell and recombine with holes in the valence band was proposed to interpret the enhancement. Our model can also be used to explain the quenched emission in FePt-CdS core-shell nanostructures and Au-CdSe nanodumbbells.

AB - Metal-semiconductor core-shell nanostructures have been synthesized to explore the influence of metal nanostructures on the photoluminescence of semiconductors. Up to 40 times enhancement in the emission intensity was observed in the Au-CdS core-shell nanostructures. The mechanism where the excited electrons on Au surface by surface plasmon wave transfer to the conduction band of the CdS shell and recombine with holes in the valence band was proposed to interpret the enhancement. Our model can also be used to explain the quenched emission in FePt-CdS core-shell nanostructures and Au-CdSe nanodumbbells.

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ER -

Carrier transfer induced photoluminescence change in metal-semiconductor core-shell nanostructures

Abstract

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