Characterization of surface modified ZnCuInS2 nanocrystals and its application to white light-emitting diodes

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

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4 Citations (Scopus)

Abstract

Red-emitting ZnCuInS2 semiconductor nanocrystals (NCs) were synthesized and surface modification was performed on the NCs with oleylamine, trioctylphosphine, and 3-mercaptopropionic acid by the ligand exchange strategy. UV-visible spectroscopy, photoluminescence (PL) spectroscopy, time-resolved PL analysis, and attenuated total reflection Fourier transform infrared spectroscopy were used to verify the surface modification of NCs. Additionally, white light-emitting diodes (LEDs) were fabricated using surface modified red-emitting ZnCuInS2 NCs as red phosphor to compensate for the deficiency of red emission in white LEDs, consisting of blue LEDs as excitation sources and YAG:Ce as yellow phosphor.

Original languageEnglish
Pages (from-to)1992-1997
Number of pages6
JournalApplied Optics
Volume52
Issue number10
DOIs
Publication statusPublished - 2013 Apr 1

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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