Effects of additional Ce3+ doping on the luminescence of Li 2 SrSiO4: Eu2+ yellow phosphor

Tae Gon Kim; Hyo Sug Lee; Chun Che Lin; Taehyung Kim; Ru Shi Liu; Ting Shan Chan; Seoung Jae Im

doi:10.1063/1.3308486

Effects of additional Ce³⁺ doping on the luminescence of Li ₂ SrSiO₄: Eu²⁺ yellow phosphor

Tae Gon Kim, Hyo Sug Lee, Chun Che Lin, Taehyung Kim, Ru Shi Liu, Ting Shan Chan, Seoung Jae Im

Research output: Contribution to journal › Article › peer-review

85 Citations (Scopus)

Abstract

Additional Ce³⁺ doping improves the luminescence of Li ₂ SrSiO₄: Eu²⁺, a yellow phosphor for ultraviolet or blue light-emitting diodes. By examining the photoluminescence of Li₂ SrSiO₄: Eu²⁺, Li₂ SrSiO ₄: Ce³⁺, and Li₂ SrSiO₄: Ce ³⁺, Eu²⁺, it was confirmed that the energy transfer from Ce³⁺ to Eu²⁺ ions contributes little to the enhanced luminescence of Li₂ SrSiO₄: Ce³⁺, Eu ²⁺. Alternatively, we suggested that Ce³⁺ ions could stabilize the Li vacancies, inhibit the oxidization of Eu²⁺ to Eu³⁺, and consequently increase emission intensity, based on the characterizations with decay time and synchrotron light source x-ray absorption measurements. The proposed argument was validated with first principle calculations of the defect formation energies.

Original language	English
Article number	061904
Journal	Applied Physics Letters
Volume	96
Issue number	6
DOIs	https://doi.org/10.1063/1.3308486
Publication status	Published - Feb 22 2010
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Effects of additional Ce3+ doping on the luminescence of Li 2 SrSiO4: Eu2+ yellow phosphor",

abstract = "Additional Ce3+ doping improves the luminescence of Li 2 SrSiO4: Eu2+, a yellow phosphor for ultraviolet or blue light-emitting diodes. By examining the photoluminescence of Li2 SrSiO4: Eu2+, Li2 SrSiO 4: Ce3+, and Li2 SrSiO4: Ce 3+, Eu2+, it was confirmed that the energy transfer from Ce3+ to Eu2+ ions contributes little to the enhanced luminescence of Li2 SrSiO4: Ce3+, Eu 2+. Alternatively, we suggested that Ce3+ ions could stabilize the Li vacancies, inhibit the oxidization of Eu2+ to Eu3+, and consequently increase emission intensity, based on the characterizations with decay time and synchrotron light source x-ray absorption measurements. The proposed argument was validated with first principle calculations of the defect formation energies.",

author = "Kim, {Tae Gon} and Lee, {Hyo Sug} and Lin, {Chun Che} and Taehyung Kim and Liu, {Ru Shi} and Chan, {Ting Shan} and Im, {Seoung Jae}",

note = "Funding Information: C.C.L. and R.-S.L. thank financial support from National Science Council (Taiwan) under Contract Nos. 97-3114-M-002-005 and 97-002-012-MY3. ",

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T2 - Eu2+ yellow phosphor

AU - Kim, Tae Gon

AU - Lee, Hyo Sug

AU - Lin, Chun Che

AU - Kim, Taehyung

AU - Liu, Ru Shi

AU - Chan, Ting Shan

AU - Im, Seoung Jae

N1 - Funding Information: C.C.L. and R.-S.L. thank financial support from National Science Council (Taiwan) under Contract Nos. 97-3114-M-002-005 and 97-002-012-MY3.

PY - 2010/2/22

Y1 - 2010/2/22

N2 - Additional Ce3+ doping improves the luminescence of Li 2 SrSiO4: Eu2+, a yellow phosphor for ultraviolet or blue light-emitting diodes. By examining the photoluminescence of Li2 SrSiO4: Eu2+, Li2 SrSiO 4: Ce3+, and Li2 SrSiO4: Ce 3+, Eu2+, it was confirmed that the energy transfer from Ce3+ to Eu2+ ions contributes little to the enhanced luminescence of Li2 SrSiO4: Ce3+, Eu 2+. Alternatively, we suggested that Ce3+ ions could stabilize the Li vacancies, inhibit the oxidization of Eu2+ to Eu3+, and consequently increase emission intensity, based on the characterizations with decay time and synchrotron light source x-ray absorption measurements. The proposed argument was validated with first principle calculations of the defect formation energies.

AB - Additional Ce3+ doping improves the luminescence of Li 2 SrSiO4: Eu2+, a yellow phosphor for ultraviolet or blue light-emitting diodes. By examining the photoluminescence of Li2 SrSiO4: Eu2+, Li2 SrSiO 4: Ce3+, and Li2 SrSiO4: Ce 3+, Eu2+, it was confirmed that the energy transfer from Ce3+ to Eu2+ ions contributes little to the enhanced luminescence of Li2 SrSiO4: Ce3+, Eu 2+. Alternatively, we suggested that Ce3+ ions could stabilize the Li vacancies, inhibit the oxidization of Eu2+ to Eu3+, and consequently increase emission intensity, based on the characterizations with decay time and synchrotron light source x-ray absorption measurements. The proposed argument was validated with first principle calculations of the defect formation energies.

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Effects of additional Ce³⁺ doping on the luminescence of Li ₂ SrSiO₄: Eu²⁺ yellow phosphor

Abstract

ASJC Scopus subject areas

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