Warm with high color rendering index white light from hybridization of Ca2BO3Cl: Eu2+ yellow phosphor and CdSe/ZnS nanocrystals

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

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Yellow emitting Ca2BO3Cl:Eu2+ phosphor was prepared by solid state reaction at 900°C. The particle was monoclinic crystal structure, and showed broad band emission at around 540-590nm due to the 5d-4f transition. Single Ca2BO3Cl:Eu2+ phosphor converted white LED exhibited the CIE coordinates of (0.3441, 0.2675) with low CRI of 67.4. Hybridization of Ca2BO3Cl:Eu2+ with 535 and 610nm emitting CdSe/ZnS nanocrystals contributed to increasing white spectrum and generated the warm color temperature (4055K) with high CRI (83.9) of white light. The acceptable color stability was also observed from (0.3687, 0.3051) at 20mA to (0.3645, 0.3101) at 80mA.

Original languageEnglish
Pages (from-to)1743-1746
Number of pages4
JournalJournal of Industrial and Engineering Chemistry
Volume19
Issue number5
DOIs
Publication statusPublished - 2013 Sept 25

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012R1A1A2007908 ).

Funding Information:
This work was supported by the Human Resources Development the Korea Institute of Energy Technology Evaluation and Planning ( 20114010203050 ) grant funded by the Korea government Ministry of Knowledge Economy .

Keywords

  • CaBOCl:Eu
  • Inorganic materials
  • Nanocrystals
  • Optical properties
  • White light emitting diodes

ASJC Scopus subject areas

  • General Chemical Engineering

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