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Title: Bicolor Mn-doped CuInS{sub 2}/ZnS core/shell nanocrystals for white light-emitting diode with high color rendering index

We synthesized bicolor Mn-doped CuInS{sub 2} (CIS)/ZnS core/shell nanocrystals (NCs), in which Mn{sup 2+} ions and the CIS core were separated with a ZnS layer, and both Mn{sup 2+} ions and CIS cores could emit simultaneously. Transmission electron microscopy and powder X-ray diffraction measurements indicated the epitaxial growth of ZnS shell on the CuInS{sub 2} core, and electron paramagnetic resonance spectrum indicated that Mn{sup 2+} ions were on the lattice points of ZnS shell. By integrating these bicolor NCs with commercial InGaN-based blue-emitting diodes, tricolor white light-emitting diodes with color rendering index of 83 were obtained.
Authors:
; ; ; ; ;  [1] ; ; ; ;  [2]
  1. Advanced Photonic Center, Southeast University, Nanjing 210096 (China)
  2. Research Institute of Electric Light Source Materials, Nanjing University of Technology, Nanjing 210015 (China)
Publication Date:
OSTI Identifier:
22314400
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COLOR; COPPER SULFIDES; DOPED MATERIALS; ELECTRON SPIN RESONANCE; EMISSION; EPITAXY; INDIUM SULFIDES; LIGHT EMITTING DIODES; MANGANESE IONS; NANOSTRUCTURES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; ZINC SULFIDES