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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 4, Iss. 2 — Feb. 1, 2014
  • pp: 220–226

Tunable near-infrared localized surface plasmon resonances of heterostructured Cu1.94S-ZnS nanocrystals

Haihang Ye, Aiwei Tang, Yanbing Hou, Chunhe Yang, and Feng Teng  »View Author Affiliations


Optical Materials Express, Vol. 4, Issue 2, pp. 220-226 (2014)
http://dx.doi.org/10.1364/OME.4.000220


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Abstract

Strong near-infrared (NIR) localized surface plasmon resonances (LSPRs) have been observed in spherical Cu1.94S nanocrystals and matchstick-like Cu1.94S-ZnS heterostructured nanocrystals, which have been synthesized using a simple one-pot approach without any injection and pre-synthesis of metal precursors. The LSPRs peak of the Cu1.94S nanocrystals could be tuned from 1680 nm to 1375 nm by heterogrowth of ZnS onto the Cu1.94S nanocrystals due to the increase of free carriers (holes). The LSPRs absorbance can be optimized to 1322 nm by prolonging the growth time of the heterostructured nanocrystals, which may be used as a light absorbing agent for photothermal therapy.

© 2014 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(300.1030) Spectroscopy : Absorption
(300.6490) Spectroscopy : Spectroscopy, surface
(160.4236) Materials : Nanomaterials

ToC Category:
Plasmonics

History
Original Manuscript: December 3, 2013
Revised Manuscript: December 15, 2013
Manuscript Accepted: December 15, 2013
Published: January 7, 2014

Citation
Haihang Ye, Aiwei Tang, Yanbing Hou, Chunhe Yang, and Feng Teng, "Tunable near-infrared localized surface plasmon resonances of heterostructured Cu1.94S-ZnS nanocrystals," Opt. Mater. Express 4, 220-226 (2014)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-4-2-220


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