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

doi:10.1016/j.jiec.2013.02.016

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

* Honorary professors

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	1743-1746
Number of pages	4
Journal	Journal of Industrial and Engineering Chemistry
Volume	19
Issue number	5
DOIs	https://doi.org/10.1016/j.jiec.2013.02.016
Publication status	Published - 2013 Sept 25

Keywords

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

ASJC Scopus subject areas

Chemical Engineering(all)

Access to Document

10.1016/j.jiec.2013.02.016

Cite this

@article{f7d53ddfefb04e188ce629244c33b488,

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

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.",

keywords = "CaBOCl:Eu, Inorganic materials, Nanocrystals, Optical properties, White light emitting diodes",

author = "Wonkeun Chung and Hyunchul Jung and Lee, {Chang Hun} and Kim, {Sung Hyun}",

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 .",

year = "2013",

month = sep,

day = "25",

doi = "10.1016/j.jiec.2013.02.016",

language = "English",

volume = "19",

pages = "1743--1746",

journal = "Journal of Industrial and Engineering Chemistry",

issn = "1226-086X",

publisher = "Korean Society of Industrial Engineering Chemistry",

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T1 - Warm with high color rendering index white light from hybridization of Ca2BO3Cl

T2 - Eu2+ yellow phosphor and CdSe/ZnS nanocrystals

AU - Chung, Wonkeun

AU - Jung, Hyunchul

AU - Lee, Chang Hun

AU - Kim, Sung Hyun

N1 - 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 .

PY - 2013/9/25

Y1 - 2013/9/25

N2 - 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.

AB - 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.

KW - CaBOCl:Eu

KW - Inorganic materials

KW - Nanocrystals

KW - Optical properties

KW - White light emitting diodes

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