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 | |
| Publication status | Published - Feb 22 2010 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Effects of additional Ce3+ doping on the luminescence of Li 2 SrSiO4 : Eu2+ yellow phosphor. / Kim, Tae Gon; Lee, Hyo Sug; Lin, Chun Che; Kim, Taehyung; Liu, Ru Shi; Chan, Ting Shan; Im, Seoung Jae.
In: Applied Physics Letters, Vol. 96, No. 6, 061904, 22.02.2010.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of additional Ce3+ doping on the luminescence of Li 2 SrSiO4
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
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.
UR - http://www.scopus.com/inward/record.url?scp=76749154169&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=76749154169&partnerID=8YFLogxK
U2 - 10.1063/1.3308486
DO - 10.1063/1.3308486
M3 - Article
VL - 96
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 6
M1 - 061904
ER -