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

Wonkeun Chung, Hyunchul Jung, Chang Hun Lee, Sung Hyun Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)2483-2488
Number of pages6
JournalOptics Express
Volume22
Issue number3
DOIs
Publication statusPublished - 2014 Feb 10

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nanocrystals
light emitting diodes
silicon dioxide
fabrication
red shift
phosphors
attraction
thermal stability
electrostatics
color
coatings

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Fabrication of highly stable silica coated ZnCuInS nanocrystals monolayer via layer by layer deposition for LED application. / Chung, Wonkeun; Jung, Hyunchul; Lee, Chang Hun; Kim, Sung Hyun.

In: Optics Express, Vol. 22, No. 3, 10.02.2014, p. 2483-2488.

Research output: Contribution to journalArticle

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