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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 3 — Feb. 10, 2014
  • pp: 2483–2488

Fabrication of highly stable silica coated ZnCuInS nanocrystals monolayer via layer by layer deposition for LED application

Wonkeun Chung, Hyunchul Jung, Chang Hun Lee, and Sung Hyun Kim  »View Author Affiliations


Optics Express, Vol. 22, Issue 3, pp. 2483-2488 (2014)
http://dx.doi.org/10.1364/OE.22.002483


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Abstract

In this study, non-toxic and highly stable silica coated ZnCuInS NCs were synthesized by a reverse microemulsion method. The single NCs were uniformly encapsulated in a silica shell with a diameter of ~30nm. Although hydrolyzed TEOS caused a QY reduction, and a 12.5nm red shift occurred after silica coating, the photo and thermal stabilities were extremely improved. For LED application, the silica coated ZnCuInS NCs phosphor layer was arrayed on the InGaN LED surface by layer-by-layer deposition utilizing electrostatic attraction. When the ZnCuInS/SiO2 NCs single monolayer was fabricated, 6.73% high color conversion efficiency was achieved.

© 2014 Optical Society of America

OCIS Codes
(160.6030) Materials : Silica
(160.4236) Materials : Nanomaterials
(230.7405) Optical devices : Wavelength conversion devices

ToC Category:
Thin Films

History
Original Manuscript: July 25, 2013
Revised Manuscript: November 27, 2013
Manuscript Accepted: January 2, 2014
Published: January 29, 2014

Citation
Wonkeun Chung, Hyunchul Jung, Chang Hun Lee, and Sung Hyun Kim, "Fabrication of highly stable silica coated ZnCuInS nanocrystals monolayer via layer by layer deposition for LED application," Opt. Express 22, 2483-2488 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-3-2483


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